Neuroticism, loneliness, all-cause and cause-specific mortality: A 17-year study of nearly 500,000 individuals
Deason K, Luchetti M, Karakose S, Stephan Y, O'Súilleabháin P, Hajek A, Sutin A, Terracciano A
J AFFECT DISORDERS. 2025;368:274-281.

Sleep problems, pain interference, and global subjective health outcome: Findings from a representative aging study in Ghana
Gyasi R, Konadu E, Appiah P, Agyei D, Nyaaba E, Ntiamoah M, Asiedu H, Koomson-Yalley E, Tayviah M, Opoku-Ware J, Hajek A
GERIATR NURS. 2025;61:73-79.

Ambivalent ageism and the pains and gains of informal caregiving for older adults: Findings from Germany
Zwar L, König H, Delfin E, Hajek A
ARCH GERONTOL GERIAT. 2025;129:105683.

Oral health-related quality of life and loneliness: results based on a cross-sectional survey
Abdullah A, König H, Hajek A
ARCH PUBLIC HEALTH. 2024;82(1):.

Cost-Effectiveness of Treatments for Musculoskeletal Conditions Offered by Physiotherapists: A Systematic Review of Trial-Based Evaluations
Baumbach L, Feddern W, Kretzler B, Hajek A, König H
SPORTS MED-OPEN. 2024;10:38.

Physical activity in adults with and without rheumatoid arthritis: cross-sectional results from the Survey of Health, Ageing and Retirement in Europe (SHARE)
Belau M, Flaßkamp F, Becher H, Hajek A, König H, Baumbach L
SCAND J RHEUMATOL. 2024;53(2):112-117.

Pain: its prevalence and correlates among the oldest old
Bokermann J, König H, Hajek A
AGING CLIN EXP RES. 2024;36(1):2.

Cross-sectional association of food insecurity with loneliness in older adults: The role of sex, age, and psychosomatic factors
Gyasi R, Aikins E, Hajek A, Opoku-Ware J, Osei B, Kwabena-Adade J, Jacob L, Rahmati M, Dakurah G, Peltzer K
J NUTR HEALTH AGING. 2024;28(9):100328.

Later Life Food Insecurity and Social Isolation in Ghana: The Importance of Psychological Factors
Gyasi R, Phillips D, Aikins E, Peltzer K, Accam B, Frempong F, Dwumah P, Koomson-Yalley E, Asiedu H, Abass K, Hajek A
INT J GERIATR PSYCH. 2024;39(8):e6134.

Meeting the WHO physical activity guidelines is associated with lower odds of depression in older adults: Potential psychosomatic mechanisms
Gyasi R, Quansah N, Boateng P, Akomeah E, Yakubu A, Ahiabli P, Aikins E, Owusu-Sarpong O, Dumbe Y, Nimoh M, Phillips D, Hajek A
AM J GERIAT PSYCHIAT. 2024;32(9):1105-1118.

Editorial: Correlates of loneliness and social isolation in old age
Hajek A
ARCH GERONTOL GERIAT. 2024;125:105528.

Personality and the use of cancer screenings - Results of the German National Cohort
Hajek A, Becher H, Brenner H, Holleczek B, Katzke V, Kaaks R, Minnerup H, Karch A, Baurecht H, Leitzmann M, Peters A, Gastell S, Ahrens W, Haug U, Nimptsch K, Pischon T, Michels K, Dorrn A, Klett-Tammen C, Castell S, Willich S, Keil T, Schipf S, Meinke-Franze C, Harth V, Obi N, König H
PREV MED REP. 2024;41:102677.

Factors associated with institutionalization among the oldest old: Results based on the nationally representative study 'old age in Germany (D80+)'
Hajek A, Gyasi R, König H
INT J GERIATR PSYCH. 2024;39(5):.

Factors associated with loneliness among individuals aged 80 years and over: Findings derived from the nationally representative "Old Age in Germany (D80+)" study
Hajek A, Gyasi R, König H
ARCH GERONTOL GERIAT. 2024;123:105443.

Vision and hearing problems and psychosocial outcomes: longitudinal evidence from the German Ageing Survey
Hajek A, Gyasi R, Kretzler B, König H
SOC PSYCH PSYCH EPID. 2024;59(5):879-886.

Translation and Validation of the German Version of the Ikigai-9
Hajek A, Imai T, Zwar L, König H
SOCIETIES. 2024;14(3):39.

Death anxiety among the oldest old in Germany. Evidence from the nationally representative 'Old Age in Germany (D80+)'
Hajek A, Jacob L, Pengpid S, Peltzer K, Gyasi R, Soysal P, Veronese N, Kostev K, Aarabi G, König H
PSYCHOGERIATRICS. 2024;24(6):1347-1355.

Belief in science and climate anxiety: findings from a quota-sample
Hajek A, König H
J PUBLIC HEALTH-HEID. 2024 [Epub ahead of print].

Editorial: Health-related quality of life in old age
Hajek A, König H
ARCH GERONTOL GERIAT. 2024;125:105529.

Factors Leading to a Decrease in Grip Strength Among the Oldest Old: A Large, Representative, Longitudinal Survey
Hajek A, König H
J AM MED DIR ASSOC. 2024;25(4):672-675.

Health comparisons and loneliness and perceived social isolation: A brief overview and empirical evidence
Hajek A, König H
2024. Loneliness and Social Isolation in Old Age: Correlates and Implications. 1. ed. Abingdon: Routledge, 121-129.

Health-related quality of life during the COVID 19 pandemic and beyond
Hajek A, König H
ARCH GERONTOL GERIAT. 2024;122:105426.

How do individuals rate their health compared to others? findings based on a nationally representative sample in Germany
Hajek A, König H
BMC PUBLIC HEALTH. 2024;24:197.

Interest in anime and manga: relationship with (mental) health, social disconnectedness, social joy and subjective well-being
Hajek A, König H
J PUBLIC HEALTH-HEID. 2024 [Epub ahead of print].

Migrationshintergrund und Einsamkeit im mittleren und hohen Alter in Deutschland
Hajek A, König H
BUNDESGESUNDHEITSBLA. 2024;67(10):1137-1143.

Online social media use, loneliness and perceived social isolation in later life: A short overview and some empirical evidence
Hajek A, König H
2024. Loneliness and Social Isolation in Old Age: Correlates and Implications. Hajek A, Riedel-Heller S, König H (eds.). 1. ed. Abingdon: Routledge, 95-103.

Overview: Loneliness and social isolation in longitudinal aging studies around the world
Hajek A, König H
2024. Loneliness and Social Isolation in Old Age: Correlates and Implications. Hajek A, Riedel-Heller S, König H (eds.). 1. ed. Abingdon: Routledge, 203-207.

Perceived ageism and psychosocial outcomes during the COVID-19 pandemic
Hajek A, König H
ARCH PUBLIC HEALTH. 2024;82(1):.

Prevalence and factors associated with probable depression among the oldest old during the Covid-19 pandemic: evidence from the large, nationally representative 'Old Age in Germany (D80+)' study
Hajek A, König H, Sutin A, Terracciano A, Luchetti M, Stephan Y, Gyasi R
PSYCHOGERIATRICS. 2024;24(4):838-846.

Multimorbidity, loneliness, and social isolation: A systematic review: First published in International Journal of Environmental Research and Public Health (Reprint)
Hajek A, Kretzler B, König H
2024. Loneliness and Social Isolation in Old Age: Correlates and Implications. Hajek A, Riedel-Heller S, König H (eds.). 2. ed. Abingdon: Routledge, 150-169.

Predictors of dementia among the oldest old: longitudinal findings from the representative "survey on quality of life and subjective well-being of the very old in North Rhine-Westphalia (NRW80+)"
Hajek A, Kretzler B, Riedel-Heller S, Gyasi R, König H
BMC GERIATR. 2024;24(1):680.

Pet ownership and psychosocial outcomes among the oldest old in Germany during the Covid-19 pandemic. Findings based on the nationally representative "Old Age in Germany (D80+)"
Hajek A, Peltzer K, Veronese N, König H, Gyasi R
INT J GERIATR PSYCH. 2024;39(7):.

Is loneliness associated with cancellation of medical appointments during the COVID-19 pandemic? Evidence from the Hamburg City Health Study (HCHS)
Hajek A, Petersen E, Schäfer I, Harth V, Koch-Gromus U, Härter M, Schulz H, Scherer M, König H
BMC HEALTH SERV RES. 2024;24:32.

Chronic loneliness and chronic social isolation among older adults: a study protocol for a systematic review, meta-analysis and meta-regression
Hajek A, Posi G, König H
BMJ OPEN. 2024;14(4):e080399.

Loneliness and Social Isolation in Old Age: Correlates and Implications
Hajek A, Riedel-Heller S, König H
2024.

Preface
Hajek A, Riedel-Heller S, König H
2024. Loneliness and Social Isolation in Old Age: Correlates and Implications. Hajek A, Riedel-Heller S, König H (eds.). 1. ed. Abingdon: Routledge, XIV-XV.

Perception of one’s social environment and loneliness: results of the nationally representative “Old age in Germany (D80+)” study
Hajek A, Sutin A, Luchetti M, Peltzer K, Veronese N, Gyasi R, Soysal P, Stephan Y, Terracciano A, König H
SOC PSYCH PSYCH EPID. 2024 [Epub ahead of print].

German population norms of the preference to solitude scale and its correlates
Hajek A, Sutin A, Luchetti M, Stephan Y, Peltzer K, Terracciano A, König H
PLOS ONE. 2024;19(5):.

Chronic loneliness and chronic social isolation among older adults. A systematic review, meta-analysis and meta-regression
Hajek A, Sutin A, Posi G, Stephan Y, Peltzer K, Terracciano A, Luchetti M, König H
AGING MENT HEALTH. 2024 [Epub ahead of print];1-16.

Ikigai and use of preventive healthcare services in Germany
Hajek A, Sutin A, Terracciano A, Luchetti M, Stephan Y, Peltzer K, König H
PREV MED. 2024;189:108159.

Validation of the German version of the 25-item hikikomori questionnaire 25
Hajek A, Teo A, Zwar L, König H
INT J METH PSYCH RES. 2024;33(2):.

Prevalence and determinants of loneliness among the oldest old living in institutionalized settings: Study findings from a representative survey
Hajek A, Zwar L, Gyasi R, Kretzler B, König H
Z GERONTOL GERIATR. 2024;57(3):214-219.

Social Activities and Risk of Dementia in Community-Dwelling Older People: Gender-Specific Findings from a Prospective Cohort Study
Htun H, Teshale A, Owen A, Ryan J, Woods R, Orchard S, Hajek A, Lysen T, Shah R, Chong T, Sheets K, Joyce J, Murray A, Freak-Poli R
J GERONTOL B-PSYCHOL. 2024;79(5):gbae050.

Migration background and use of preventive healthcare services: Findings of the German Ageing Survey
Kameraj A, König H, Hajek A
BMC PUBLIC HEALTH. 2024;24(1):2442.

Hospital Length of Stay and Associated Factors in Adult Patients with Depression in Germany: A Cross-Sectional Study
Kaur N, Konrad M, Hajek A, Smith L, Kostev K
J CLIN MED. 2024;13(15):4331.

Profiles of met and unmet care needs in the oldest-old primary care patients with depression - Results of the AgeMooDe study
Kraake S, Pabst A, Wiese B, Moor L, König H, Hajek A, Kaduszkiewicz H, Scherer M, Stark A, Wagner M, Maier W, Werle J, Weyerer S, Riedel-Heller S, Stein J
J AFFECT DISORDERS. 2024;350:618-626.

Pet ownership, loneliness, and social isolation
Kretzler B, König H, Hajek A
2024. Loneliness and Social Isolation in Old Age: Correlates and Implications. Hajek A, Riedel-Heller S, König H (eds.). 1. ed. Abingdon: Routledge, 86-94.

The effect of depressive symptoms on quality of life and its different facets in the oldest age population: evidence from the AgeQualiDe prospective cohort study
Liegert P, Pabst A, Conrad I, van den Bussche H, Eisele M, Hajek A, Heser K, Kleineidam L, Weyerer S, Werle J, Pentzek M, Weeg D, Mösch E, Wiese B, Oey A, Wagner M, Maier W, König H, Riedel-Heller S, Scherer M, Luppa M
QUAL LIFE RES. 2024;33(2):387-398.

Age-specific risk factors of depression among the oldest-old - evidence from the multicenter AgeCoDe-AgeQualiDe study
Luppa M, Pabst A, Löbner M, Mallon T, Brettschneider C, Hajek A, Heser K, Kleineidam L, Weyerer S, Werle J, Pentzek M, Weeg D, Mösch E, Wiese B, Oey A, Wagner M, Maier W, Scherer M, König H, Riedel-Heller S
FRONT PSYCHIATRY. 2024;15:1367225.

Fear of dementia among middle-aged and older adults in Germany
Meyer J, Buczak-Stec E, König H, Hajek A
DEMENT GER COGN D EX. 2024;14(1):96-105.

Social isolation in the oldest-old: determinants and the differential role of family and friends
Moormann K, Pabst A, Bleck F, Löbner M, Kaduszkiewicz H, van der Leeden C, Hajek A, Brettschneider C, Heser K, Kleineidam L, Werle J, Fuchs A, Weeg D, Bickel H, Pentzek M, Weyerer S, Wiese B, Wagner M, Maier W, Scherer M, König H, Riedel-Heller S
SOC PSYCH PSYCH EPID. 2024;59(6):979-988.

Determinants of Telemedicine Service Use Among Middle-Aged and Older Adults in Germany During the COVID-19 Pandemic: Cross-Sectional Survey Study
Neumann A, König H, Hajek A
JMIR AGING. 2024;7:e50938.

Determinants of depressive symptoms among persons 80 years and older: longitudinal national evidence from the health, aging, and retirement study in Thailand, 2015-2022
Pengpid S, Peltzer K, Hajek A, Anantanasuwong D, Kaewchankha W
BMC GERIATR. 2024;24:880.

Experiencing Cerebrovascular Diseases like Stroke and Fear of Falling: Longitudinal Results from the Survey of Health, Ageing and Retirement in Europe
Tahiraj A, König H, Hajek A
GERIATRICS-BASEL. 2024;9(5):133.

Physical activity and persistence of supra-threshold depressive symptoms in older adults: A ten-year cohort study
Veronese N, Stubbs B, Ragusa F, Hajek A, Smith L, Barbagallo M, Dominguez L, Fontana L, Monastero R, Soysal P, Demurtas J, Schuch F, Liang C, Vancampfort D, Aldisi D, Sabico S, Al-Daghri N, Solmi M
PSYCHIAT RES. 2024;342:116259.

Caregiving intensity and its association with subjective views of ageing among informal caregivers with different sociodemographic background: a longitudinal analysis from Germany
Zwar L, König H, Hajek A
EUR J AGEING. 2024;21:4.

Look on the bright side: the relation between family values, positive aspects of care and caregiver burden
Zwar L, König H, Hajek A
EUR J AGEING. 2024;21:23.

The potential of informal care for self-perceptions of aging among older community-dwelling adults: Longitudinal findings from the Health and Retirement Study
Zwar L, König H, Hajek A
J GERONTOL B-PSYCHOL. 2024;79(3):gbad189.

Views of aging and mental health - The role of informal care provision: Longitudinal findings of the health and retirement study in the US
Zwar L, König H, Hajek A
J AFFECT DISORDERS. 2024;361:472-479.

Multimorbidity patterns in the German general population aged 40 years and over
Amirzada M, Buczak-Stec D, König P, Hajek P
ARCH GERONTOL GERIAT. 2023;114:105067.

The association between the interaction of migration background and physical activity with loneliness in middle-aged and older adults living in Germany
Baumbach L, Barth L, König H, Hajek A
PSYCHOGERIATRICS. 2023;23(4):621-630.

Patients Satisfied with Care Report Better Quality of Life and Self-Rated Health—Cross-Sectional Findings Based on Hospital Quality Data
Baumbach L, Frese M, Härter M, König H, Hajek A
HEALTHCARE-BASEL. 2023;11(5):775.

Associations between changes in physical activity and perceived social exclusion and loneliness within middle-aged adults – longitudinal evidence from the German ageing survey
Baumbach L, König H, Hajek A
BMC PUBLIC HEALTH. 2023;23(1):274.

Determinants of health-related quality of life (HRQoL) among homeless individuals during the COVID-19 pandemic
Brennecke A, Heinrich F, van Rüth V, Dost K, Graf W, Kowalski V, Rauch A, Langenwalder F, Püschel K, Ondruschka B, König H, Bertram F, Hajek A
QUAL LIFE RES. 2023;32(11):3075-3083.

Long-Term Care Preferences and Sexual Orientation-A Systematic Review and Meta-Analysis
Buczak-Stec E, König H, Feddern L, Hajek A
J AM MED DIR ASSOC. 2023;24(3):331-342.e1.

Sexual orientation and psychosocial factors in terms of loneliness and subjective well-being in later life
Buczak-Stec E, König H, Hajek A
GERONTOLOGIST. 2023;63(2):338-349.

Sexual Satisfaction Among Sexual Minority and Heterosexual Middle-Aged and Older Adults
Buczak-Stec E, König H, Hajek A
INNOV AGING. 2023;7(2):igad010.

Are transgender people satisfied with their lives?
Grupp K, Blessmann M, König H, Hajek A
BMC PUBLIC HEALTH. 2023;23:1002.

Ageing Happily in Ghana: How Does Social Inclusion Contribute?
Gyasi R, Hajek A, Asante F, Accam B, Osei-Tutu S, Rahmati M, Hervie V, Abass K, Phillips D
PSYCHOGERIATRICS. 2023;23(5):821-830.

Sleep and Happiness in Urban-Dwelling Older Adults in Ghana: A Serial Multiple Mediation Model of Generalized Anxiety and Depressive Symptoms
Gyasi R, Hajek A, Owusu R, James P, Boampong M, Accam B, Abass K, Owusu-Dabo E, Phillips D
AM J GERIAT PSYCHIAT. 2023;31(11):953-964.

Diabetes mellitus and functional limitations among older adults: Evidence from a large, representative Ghanaian aging study
Gyasi R, Odei J, Hambali M, Gyasi-Boadu N, Obeng B, Asori M, Hajek A, Jacob L, Adjakloe Y, Opoku-Ware J, Smith L, Koyanagi A
J PSYCHOSOM RES. 2023;174:111481.

Bodily pain in physical function and the role of physical activity among community-dwelling adults aged 50-69 years in Ghana
Gyasi R, Phillips D, Sefa Boampong M, Abass K, Kyei-Arthur F, Agunbiade O, Mohammed S, Salarvand S, Smith L, Hajek A
J GERONTOL A-BIOL. 2023;78(9):1604-1611.

Do sexual minorities believe that they die earlier? Results from a large, representative survey
Hajek A, Buczak-Stec E, König H
BMC GERIATR. 2023;23:742.

Einstellung zur Grippeimpfung im Herbst/Winter 2021: Ergebnisse der COSMO-Studie
Hajek A, De Bock F, Merkel C, Eitze S, Betsch C, Bosnjak M, Wieler L, König H
GESUNDHEITSWESEN. 2023;85(1):36-38.

Long-term care need, loneliness, and perceived social isolation during the COVID-19 pandemic: evidence from the German Ageing Survey
Hajek A, Grupp K, Aarabi G, Gyasi R, Freak-Poli R, Kretzler B, König H
AGING CLIN EXP RES. 2023;35(6):1377-1384.

Parkinson's Disease and Subjective Prospects for the Future in Different Life Domains. Findings of a Nationally Representative Sample
Hajek A, Grupp K, Aarabi G, Kretzler B, König H
NEUROPSYCH DIS TREAT. 2023;19:1791-1798.

Determinants of psychosocial factors amongst the oldest old: Longitudinal evidence based on the representative "survey on quality of life and subjective well-being of the very old in North Rhine-Westphalia"
Hajek A, Gyasi R, Kretzler B, Riedel-Heller S, König H
INT J GERIATR PSYCH. 2023;38(12):.

Climate Anxiety and Mental Health in Germany
Hajek A, König H
CLIMATE. 2023;11(8):158.

Do Individuals with High Climate Anxiety Believe That They Will Die Earlier? First Evidence from Germany
Hajek A, König H
INT J ENV RES PUB HE. 2023;20(6):.

Frequency and Correlates of Multimorbidity Among the Oldest Old: Study Findings from the Representative "Survey on Quality of Life and Subjective Well-Being of the Very Old in North Rhine-Westphalia (NRW80+)"
Hajek A, König H
CLIN INTERV AGING . 2023;18:41-48.

Loneliness and social isolation in old age: A look at research during the COVID-19 pandemic and a look ahead
Hajek A, König H
ARCH GERONTOL GERIAT. 2023;108:104958.

Prevalence and correlates of coronavirus anxiety in Germany: Results of a nationally representative survey
Hajek A, König H
DEATH STUD. 2023;47(3):287-295.

Sexual satisfaction and aging satisfaction among middle-aged and older adults. Evidence from a nationally representative study
Hajek A, König H
ARCH GERONTOL GERIAT. 2023;115:105102.

Loneliness and Social Isolation among Transgender and Gender Diverse People
Hajek A, König H, Blessmann M, Grupp K
HEALTHCARE-BASEL. 2023;11(10):1517.

Prevalence and Determinants of Depressive and Anxiety Symptoms among Transgender People: Results of a Survey
Hajek A, König H, Buczak-Stec E, Blessmann M, Grupp K
HEALTHCARE-BASEL. 2023;11(5):705.

Community centers for older adults and psychosocial factors: Evidence from the German Ageing Survey
Hajek A, Kretzler B, Gyasi R, König H
INT J GERIATR PSYCH. 2023;38(3):.

Fear of war and mental health in Germany
Hajek A, Kretzler B, König H
SOC PSYCH PSYCH EPID. 2023;58(7):1049-1054.

Fear of war in Germany: An observational study
Hajek A, Kretzler B, König H
HELIYON. 2023;9(11):e21784.

Perceived Norms and Vaccination against COVID-19 among the General Adult Population in Germany: Results of a Nationally Representative Survey
Hajek A, Kretzler B, Orth B, Von Rüden U, König H
VACCINES-BASEL. 2023;11(4):.

Frequency and correlates of mild cognitive impairment and dementia among the oldest old - Evidence from the representative "Survey on quality of life and subjective well-being of the very old in North Rhine-Westphalia (NRW80+)"
Hajek A, Kretzler B, Riedel-Heller S, König H
ARCH GERONTOL GERIAT. 2023;104:.

Gründe von Menschen ab 60 Jahren in Deutschland, sich nicht gegen Covid-19 impfen zu lassen
Hajek A, Kretzler B, von Rüden U, Orth B, König H
GESUNDHEITSWESEN. 2023;85(7):622-625.

Neighbourhood cohesion, loneliness and perceived social isolation prior and during the COVID-19 pandemic. Longitudinal evidence from the German Ageing Survey
Hajek A, Kretzler B, Walther C, Aarabi G, Zwar L, König H
SOC PSYCH PSYCH EPID. 2023;58(9):1411-1420.

Oral health, anxiety symptoms and depressive symptoms: findings from the survey of health, ageing and retirement in Europe
Hajek A, Lieske B, König H, Zwar L, Kretzler B, Moszka N, Aarabi G
PSYCHOGERIATRICS. 2023;23(4):571-577.

Inanspruchnahme von und Einstellungen zu Tests zum Nachweis von SARS-CoV-2 und entsprechenden Antikörpern. Ergebnisse einer bevölkerungsrepräsentativen Befragung im Spätsommer 2021
Hajek A, Nedjad M, Kretzler B, König H
GESUNDHEITSWESEN. 2023;85(1):26-35.

Prevalence and correlates of loneliness and social isolation in the oldest old: a systematic review, meta-analysis and meta-regression
Hajek A, Volkmar A, König H
SOC PSYCH PSYCH EPID. 2023 [Epub ahead of print].

Trajectories of generalized anxiety disorder, major depression and change in quality of life in adults aged 50 + : findings from a longitudinal analysis using representative, population-based data from Ireland
Hohls J, König H, Hajek A
SOC PSYCH PSYCH EPID. 2023;58(8):1201-1211.

Health-related quality of life in seven European countries throughout the course of the COVID-19 pandemic: evidence from the European COvid Survey (ECOS)
König H, Neumann-Böhme S, Sabat I, Schreyögg J, Torbica A, van Exel J, Barros P, Stargardt T, Hajek A
QUAL LIFE RES. 2023;32(6):1631-1644.

Utilization of Internet for Religious Purposes and Psychosocial Outcomes During the COVID-19 Pandemic
Kretzler B, König H, Hajek A
ARCH GERONTOL GERIAT. 2023;108:.

RAI3 expression is not associated with clinical outcomes of patients with non-small cell lung cancer
Melling N, Reeh M, Ghadban T, Tachezy M, Hajek A, Izbicki J, Grupp K
J CANCER RES CLIN. 2023;149(9):6549-6555.

Religious affiliation and oral health-related quality of life: a cross-sectional study based on a nationally representative survey in Germany
Moszka N, Aarabi G, Lieske B, König H, Kretzler B, Zwar L, Hajek A
BMC ORAL HEALTH. 2023;23:586.

Determinants of Patient Use and Satisfaction With Synchronous Telemental Health Services During the COVID-19 Pandemic: Systematic Review
Neumann A, König H, Bokermann J, Hajek A
JMIR MENT HEALTH. 2023;10:.

Volunteering, loneliness and perceived social isolation: evidence from a representative sample of middle-aged and older adults in Germany
Richardson A, König H, Hajek A
AGING MENT HEALTH. 2023;27(11):2289-2294.

Multimorbidity and loneliness. Longitudinal analysis based on the GSOEP
Schübbe S, König H, Hajek A
ARCH GERONTOL GERIAT. 2023;105:104843.

Gesundheit wohnungsloser Menschen während der COVID-19-Pandemie
van Rüth V, Hajek A, Heinrich F, Ondruschka B, Püschel K, Bertram F
BUNDESGESUNDHEITSBLA. 2023;66(8):882-889.

Are informal caregivers more likely to believe in conspiracy theories during the COVID-19 pandemic? Findings of a representative study from Germany
Zwar L, König H, Hajek A
AGING MENT HEALTH. 2023;27(3):588-594.

Can Informal Caregiving be Perceived as Rejuvenating? Changes in Perceptions of Ageing at Onset and End of Informal Caregiving during Different Stages of Life
Zwar L, König H, Hajek A
GERONTOLOGY. 2023;69(4):483-494.

Changes in network size, quality and composition among informal caregivers in different welfare clusters: Longitudinal analyses based on pan-European survey (SHARE)
Zwar L, König H, Hajek A
GERONTOLOGY. 2023;69(12):1461-1470.

Gender Differences in Mental Health, Quality of Life, and Caregiver Burden among Informal Caregivers during the Second Wave of the COVID-19 Pandemic in Germany: A Representative, Population-Based Study
Zwar L, König H, Hajek A
GERONTOLOGY. 2023;69(2):149-162.

Mental health, social integration and support of informal caregivers during the second wave of the COVID-19 pandemic: A population-based representative study from Germany
Zwar L, König H, Hajek A
ARCH GERONTOL GERIAT. 2023;114:.

Personal human values, informal caregiving and the relevance of gender and age: Findings from the population-based German Aging Survey
Zwar L, König H, Hajek A
ARCH GERONTOL GERIAT. 2023;110:104968.

Social support for informal caregivers of spouses and parents(-in-law) aged 60 years and older during the COVID-19 pandemic. Findings from a representative German Online Survey
Zwar L, König H, Hajek A
J GERONTOL B-PSYCHOL. 2023;78(2):264-279.

Wishing for an end? Longitudinal analysis of suicidal ideation among informal caregivers inside and outside their household in different welfare systems of Europe
Zwar L, König H, Hajek A
INT PSYCHOGERIATR. 2023;35(12):736-750.

The Big Five personality traits and regularity of lifetime dental visit attendance: evidence of the Survey of Health, Ageing, and Retirement in Europe (SHARE)
Aarabi G, Walther C, Bunte K, Spinler K, Buczak-Stec E, König H, Hajek A
AGING CLIN EXP RES. 2022;34(6):1439-1445.

Association between migration and oral health-related quality of life: results from a nationally representative online survey
Aarabi G, Walther C, Kretzler B, Zwar L, König H, Hajek A
BMC ORAL HEALTH. 2022;22(1):309.

Association between onset and disappearance of pain and changes in physical activity among older adults - longitudinal evidence from the German Ageing Survey
Baumbach L, König H, Hajek A
PSYCHOGERIATRICS. 2022;22(1):67-76.

Associations between starting and stopping volunteering and physical activity among older adults - longitudinal evidence from the German Ageing Survey
Baumbach L, König H, Hajek A
BMC PUBLIC HEALTH. 2022;22(1):578.

Economic evaluations of musculoskeletal physiotherapy: protocol of a systematic review
Baumbach L, König H, Kretzler B, Hajek A
BMJ OPEN. 2022;12:.

The Mental and Physical Health of the Homeless–Evidence From the National Survey on Psychiatric and Somatic Health of Homeless Individuals (the NAPSHI Study)
Bertram F, Hajek A, Dost K, Graf W, Brennecke A, Kowalski V, Rüth V, König H, Wulff B, Ondruschka B, Püschel K, Heinrich F
DTSCH ARZTEBL INT. 2022;119(50):861-868.

Oral health and quality of life: findings from the Survey of Health, Ageing and Retirement in Europe
Block C, König H, Hajek A
BMC ORAL HEALTH. 2022;22:.

Frequency and gender differences in the use of professional home care in late life. Findings from three German old-age cohorts
Buczak-Stec E, Hajek A, Pabst A, Brettschneider C, van den Bussche H, Wiese B, Weyerer S, Werle J, Hoell A, Pentzek M, Fuchs A, Luppa M, Löbner M, Stein J, Förster F, Weeg D, Mösch E, Heser K, Scherer M, Maier W, Angermeyer M, Wagner M, Riedel-Heller S, König H
FRONT MED-LAUSANNE. 2022;9:.

Factors Contributing to Persistent Frequent Attendance in Primary Care Among the Oldest Old: Longitudinal Evidence From the AgeCoDe-AgeQualiDe Study
Buczak-Stec E, Hajek A, van den Bussche H, Eisele M, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Luppa M, Löbner M, Weeg D, Mösch E, Heser K, Wagner M, Riedel-Heller S, Maier W, Scherer M, König H
FRONT MED-LAUSANNE. 2022;9:815419.

Depressive Symptoms and Healthcare Utilization in Late Life. Longitudinal Evidence From the AgeMooDe Study
Buczak-Stec E, Löbner M, Stein J, Stark A, Kaduszkiewicz H, Werle J, Heser K, Wiese B, Weyerer S, Wagner M, Scherer M, Riedel-Heller S, König H, Hajek A
FRONT MED-LAUSANNE. 2022;9:.

Predictors of Loneliness among Homeless Individuals in Germany during the COVID-19 Pandemic
Dost K, Heinrich F, Graf W, Brennecke A, Kowalski V, Leider A, Kraus A, van Rüth V, Ondruschka B, Püschel K, König H, Bertram F, Hajek A
INT J ENV RES PUB HE. 2022;19(19):.

Social Isolation and Incident Dementia in the Oldest-Old - A Competing Risk Analysis
Grothe J, Röhr S, Luppa M, Pabst A, Kleineidam L, Heser K, Fuchs A, Pentzek M, Oey A, Wiese B, Lühmann D, Bussche van den H, Weyerer S, Werle J, Weeg D, Bickel H, Scherer M, König H, Hajek A, Wagner M, Riedel-Heller S
FRONT PSYCHIATRY. 2022;13:834438.

Fear of COVID-19 among homeless individuals in Germany in mid-2021
Hajek A, Bertram F, van Rüth V, Dost K, Graf W, Brenneke A, Kowalski V, Püschel K, Schüler C, Ondruschka B, Heinrich F, König H
FRONT PUBLIC HEALTH. 2022;10:.

Social Support and Functional Decline in the Oldest Old
Hajek A, Brettschneider C, Eisele M, Mallon T, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Gühne U, Röhr S, Weeg D, Bickel H, Kleineidam L, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
GERONTOLOGY. 2022;68(2):200-208.

Correction to: Driving status and health-related quality of life among the oldest old: a population-based examination using data from the AgeCoDe-AgeQualiDe prospective cohort study
Hajek A, Brettschneider C, Lühmann D, van den Bussche H, Wiese B, Mamone S, Weyerer S, Werle J, Leve V, Fuchs A, Röhr S, Stein J, Bickel H, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, Pentzek M, König H
AGING CLIN EXP RES. 2022;34(12):3181-3182.

Social support and health-related quality of life among the oldest old - longitudinal evidence from the multicenter prospective AgeCoDe-AgeQualiDe study
Hajek A, Brettschneider C, Mallon T, Kaduszkiewicz H, Oey A, Wiese B, Weyerer S, Werle J, Pentzek M, Fuchs A, Conrad I, Luppa M, Weeg D, Mösch E, Kleineidam L, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
QUAL LIFE RES. 2022;31(6):1667-1676.

Do Sexually Satisfied Individuals Think That They Live Longer? Results from the German Ageing Survey
Hajek A, Buczak-Stec E, König H
HEALTHCARE-BASEL. 2022;10(12):.

Factors Leading to Institutionalization among the Oldest Old: Longitudinal Findings from the AgeCoDe-AgeQualiDe Study
Hajek A, Buczak-Stec E, van den Bussche H, Eisele M, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Luppa M, Pabst A, Weeg D, Bickel H, Kleineidam L, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
GERONTOLOGY. 2022;68(8):894-902.

Use of and Satisfaction with Telemedicine Services during the Pandemic: Findings from the COVID-19 Snapshot Monitoring in Germany (COSMO)
Hajek A, De Bock F, Merkel C, Kretzler B, König H
HEALTHCARE-BASEL. 2022;10(1):.

Prevalence and determinants of depression and anxiety measured by the PHQ-4 among homeless individuals during the COVID-19 pandemic. Evidence from the Hamburg survey of homeless individuals
Hajek A, Heinrich F, van Rüth V, Kretzler B, Langenwalder F, Püschel K, Bertram F, König H
PSYCHIAT RES. 2022;308:.

Association between purpose in life and healthcare use among women and men in Germany: cross-sectional analysis of the nationally representative German Socio-Economic Panel (GSOEP) study
Hajek A, König H
BMJ OPEN. 2022;12(6):e061525.

Climate anxiety in Germany
Hajek A, König H
PUBLIC HEALTH. 2022;212:89-94.

Climate Anxiety, Loneliness and Perceived Social Isolation
Hajek A, König H
INT J ENV RES PUB HE. 2022;19(22):14991.

Determinants of Outpatient Physician Visits in the General Adult German Population during Later Stages of the COVID-19 Pandemic
Hajek A, König H
HEALTHCARE-BASEL. 2022;10(6):.

Determinants of psychosocial factors among the oldest old - Evidence from the representative "Survey on quality of life and subjective well-being of the very old in North Rhine-Westphalia (NRW80+)"
Hajek A, König H
INT J GERIATR PSYCH. 2022;37(1):.

Frequency and correlates of driving status among the oldest old: results from a large, representative sample
Hajek A, König H
AGING CLIN EXP RES. 2022;34(12):3083-3088.

Frequency and Correlates of Online Consultations With Doctors or Therapists in Middle-Aged and Older Adults: Nationally Representative Cross-sectional Study
Hajek A, König H
J MED INTERNET RES. 2022;24(4):.

Frequency and correlates of use of applications for monitoring and increasing health and well-being in middle-aged and older adults. Findings from the German Ageing Survey
Hajek A, König H
ARCH GERONTOL GERIAT. 2022;98:.

Frequency of contact with friends and relatives via internet and psychosocial factors in middle-aged and older adults during the COVID-19 pandemic. Findings from the German Ageing Survey
Hajek A, König H
INT J GERIATR PSYCH. 2022;37(1):1-10.

Grandchild care and loneliness among older Europeans: Longitudinal evidence from the Survey of Health, Ageing and Retirement in Europe
Hajek A, König H
INT J GERIATR PSYCH. 2022;37(8):.

How does beginning or ceasing of informal caregiving of individuals in poor health influence sleep quality? Findings from a nationally representative longitudinal study
Hajek A, König H
AGING MENT HEALTH. 2022;26(2):314-319.

Level and correlates of empathy and altruism during the Covid-19 pandemic. Evidence from a representative survey in Germany
Hajek A, König H
PLOS ONE. 2022;17(3):.

Loneliness, perceived isolation and sleep quality in later life. Longitudinal evidence from a population-based German study
Hajek A, König H
ARCH GERONTOL GERIAT. 2022;103:.

Oral health-related quality of life, probable depression and probable anxiety: evidence from a representative survey in Germany
Hajek A, König H
BMC ORAL HEALTH. 2022;22(1):9.

Personality and oral health-related quality of life. Results from an online survey
Hajek A, König H
BMC ORAL HEALTH. 2022;22(1):463.

Personality-related and psychosocial correlates of sick leave days in Germany during the COVID-19 pandemic: findings of a representative survey
Hajek A, König H
ARCH PUBLIC HEALTH. 2022;80:.

Political Party Affinity and Fear of Conventional and Nuclear War in Germany
Hajek A, König H
PSYCHIAT INT. 2022;3(3):212-220.

Prevalence and correlates of loneliness, perceived and objective social isolation during the COVID-19 pandemic. Evidence from a representative survey in Germany
Hajek A, König H
SOC PSYCH PSYCH EPID. 2022;57(10):1969-1978.

Reference Values and Correlates of Grip Strength in the Oldest Old: Evidence From the Representative NRW80+ (Germany)
Hajek A, König H
J AM MED DIR ASSOC. 2022;23(5):898-899.

The association between the number of life births and certain frailty dimensions
Hajek A, König H
ARCH GERONTOL GERIAT. 2022;102:.

What factors are associated with functional impairment among the oldest old?
Hajek A, König H
FRONT MED-LAUSANNE. 2022;9:.

Willingness to pay for SARS-CoV-2 rapid antigen tests during the COVID-19 pandemic: evidence from the general adult population
Hajek A, König H
PUBLIC HEALTH. 2022;207:19-23.

Regular childhood dental visits, health-related factors and quality of life in later life
Hajek A, König H, Buczak-Stec E, Rose L, Kretzler B, Spinler K, Schiffner U, Aarabi G, Walther C
ARCH GERONTOL GERIAT. 2022;99:.

Does Oral Health-Related Quality of Life Differ by Income Group? Findings from a Nationally Representative Survey
Hajek A, König H, Kretzler B, Zwar L, Lieske B, Seedorf U, Walther C, Aarabi G
INT J ENV RES PUB HE. 2022;19(17):.

Wealth and psychosocial factors among middle-aged and older adults. Findings based on nationally representative data
Hajek A, König P
ARCH GERONTOL GERIAT. 2022;103:104777.

Oral Health, Loneliness and Social Isolation. A Systematic Review and Meta-Analysis
Hajek A, Kretzler B, König H
J NUTR HEALTH AGING. 2022;26:675-680.

Prevalence and correlates of obesity among the oldest old. A systematic review, meta-analysis and meta-regression
Hajek A, Kretzler B, König H
GERIATR GERONTOL INT. 2022;22(5):373-383.

Prevalence of Prefrailty and Frailty Among Older Adults in Germany: A Systematic Review, Meta-Analysis and Meta-Regression
Hajek A, Kretzler B, König H
FRONT MED-LAUSANNE. 2022;9:.

Social Media Addiction and Fear of War in Germany
Hajek A, Kretzler B, König H
PSYCHIAT INT. 2022;3(4):313-319.

Depression and anxiety in later COVID-19 waves across Europe: New evidence from the European COvid Survey (ECOS)
Hajek A, Neumann-Böhme S, Sabat I, Torbica A, Schreyögg J, Barros P, Stargardt T, König H
PSYCHIAT RES. 2022;317:114902.

Prevalence and determinants of probable depression and anxiety during the COVID-19 pandemic in seven countries: Longitudinal evidence from the European COvid Survey (ECOS)
Hajek A, Sabat I, Neumann-Böhme S, Schreyögg J, Barros P, Stargardt T, König H
J AFFECT DISORDERS. 2022;299:517-524.

Inanspruchnahme von Gesundheitsleistungen bei Obdachlosen: Ergebnisse der Hamburger Obdachlosenbefragung
Hajek A, van Rüth V, Bertram F, Schüler C, Heinrich F, Kretzler B, Püschel K, König H
GESUNDHEITSWESEN. 2022;84(8-09):674-678.

Spousal care and its effect on partnership characteristics - a longitudinal analysis of spousal caregiving and care receipt in Germany
Happich F, König H, Hajek A
SCAND J CARING SCI. 2022;36(1):109-119.

Religious Denomination, Religiosity, Religious Attendance, and Cancer Prevention. A Systematic Review
Kretzler B, König H, Brandt L, Weiss H, Hajek A
RISK MANAG HEALTHC P. 2022;15:45-58.

Pet ownership, loneliness, and social isolation: a systematic review
Kretzler B, König H, Hajek A
SOC PSYCH PSYCH EPID. 2022;57(10):1935-1957.

The onset of falls and its effects on perceived social exclusion and loneliness. Evidence from a nationally representative longitudinal study.
Petersen N, König H, Hajek A
ARCH GERONTOL GERIAT. 2022;100:.

Does grandchild care affect ageing satisfaction? Findings based on a nationally representative longitudinal study
Quirke E, König H, Hajek A
PLOS ONE. 2022;17(3):.

Gender Specifics of Healthy Ageing in Older Age as Seen by Women and Men (70+): A Focus Group Study
Schladitz K, Förster F, Wagner M, Heser K, König H, Hajek A, Wiese B, Pabst A, Riedel-Heller S, Löbner M
INT J ENV RES PUB HE. 2022;19(5):.

Religious Affiliation and Flu Vaccination in Germany: Results of the German Ageing Survey
Shaheen H, König H, Hajek A
HEALTHCARE-BASEL. 2022;10(10):.

Association between Parkinson’s Disease and Psychosocial Factors: Results of the Nationally Representative German Ageing Survey
Vardanyan R, König H, Hajek A
J CLIN MED. 2022;11(15):.

Evidence from the Hamburg City Health Study - association between education and periodontitis
Walther C, Spinler K, Borof K, Kofahl C, Heydecke G, Seedorf U, Beikler T, Terschüren C, Hajek A, Aarabi G
BMC PUBLIC HEALTH. 2022;22(1):.

Die medizinische Versorgung von Menschen ohne regulären Aufenthaltsstatus im französischen Gesundheitssystem
Wilckens H, König H, Hajek A
GESUNDHEITSWESEN. 2022;84(12):e53-e57.

The role of migration status in the link between ADL/IADL and informal as well as formal care in Germany: Findings of the Survey of Health, Aging and Retirement in Europe
Wilckens H, König H, Hajek A
ARCH GERONTOL GERIAT. 2022;101:.

Conspiracy mentality among informal caregivers as a risk factor for caregiver burden, mental health, perceived loneliness and social isolation during the COVID-19 pandemic: findings of a representative online study from Germany
Zwar L, König H, Hajek A
QUAL LIFE RES. 2022;31(11):3139-3151.

Informal caregiving during the COVID-19 pandemic: findings from a representative, population-based study during the second wave of the pandemic in Germany
Zwar L, König H, Hajek A
AGING MENT HEALTH. 2022;26(10):2062-2070.

Perceived autonomy of informal care recipients and the relevance of self-esteem
Zwar L, König H, Hajek A
PSYCHOL AGING. 2022;37(4):542-555.

Do oldest old individuals perceive receipt of informal care as a restriction or support of their autonomy?
Zwar L, König H, van der Leeden C, Lühmann D, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Luppa M, Löbner M, Weeg D, Mösch E, Heser K, Wagner M, Maier W, Riedel-Heller S, Scherer M, Hajek A
AGING MENT HEALTH. 2022;26(9):1862-1873.

Loneliness among Homeless Individuals during the First Wave of the COVID-19 Pandemic
Bertram F, Heinrich F, Fröb D, Wulff B, Ondruschka B, Püschel K, König H, Hajek A
INT J ENV RES PUB HE. 2021;18(6):.

Factors leading to institutionalization among the oldest old. Longitudinal findings from the AgeCoDe-AgeQualiDe study
Buczak-Stec E, Hajek A, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
INT J EPIDEMIOL. 2021;50(S1):1428.

Planning to move into a nursing home in old age: does sexual orientation matter?
Buczak-Stec E, König H, Hajek A
AGE AGEING. 2021;50(3):974-979.

Sexual satisfaction of middle-aged and older adults: longitudinal findings from a nationally representative sample
Buczak-Stec E, König H, Hajek A
AGE AGEING. 2021;50(2):559-564.

Der Anteil sexueller Minoritäten in der älteren Wohnbevölkerung in Deutschland und potenzielle Assoziation zwischen der sexuellen Orientierung und depressiven Symptomen
Buczak-Stec E, König H, Riedel-Heller S, Hajek A
PSYCHIAT PRAX. 2021;48(2):92-98.

The Role of Social Isolation and the Development of Depression. A Comparison of the Widowed and Married Oldest Old in Germany
Förster F, Luppa M, Pabst A, Heser K, Kleineidam L, Fuchs A, Pentzek M, Kaduszkiewicz H, van der Leeden C, Hajek A, König H, Oey A, Wiese B, Moesch E, Weeg D, Weyerer S, Werle J, Maier W, Scherer M, Wagner M, Riedel-Heller S
INT J ENVIRON RES. 2021;18(13):.

Determinants of health care use among homeless individuals: evidence from the Hamburg survey of homeless individuals
Hajek A, Bertram F, Heinrich F, van Rüth V, Ondruschka B, Kretzler B, Schüler C, Püschel K, König H
BMC HEALTH SERV RES. 2021;21(1):317.

Prevalence and Factors Associated with Fear of COVID-19 Among Homeless Individuals During the COVID-19 Pandemic: Evidence from the Hamburg Survey of Homeless Individuals
Hajek A, Bertram F, van Rüth V, Kretzler B, Püschel K, Heinrich F, König H
RISK MANAG HEALTHC P. 2021;14:2689 - 2695.

Factors associated with postponed health checkups during the COVID-19 pandemic in Germany
Hajek A, Bock F, Kretzler B, König H
PUBLIC HEALTH. 2021;194:36-41.

Driving status and health-related quality of life among the oldest old: a population-based examination using data from the AgeCoDe-AgeQualiDe prospective cohort study
Hajek A, Brettschneider C, Lühmann D, van den Bussche H, Wiese B, Mamone S, Weyerer S, Werle J, Leve V, Fuchs A, Röhr S, Stein J, Bickel H, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, Pentzek M, König H
AGING CLIN EXP RES. 2021;33(11):3109-3115.

Frailty and Autonomy among the Oldest Old: Evidence from the Multicenter Prospective AgeCoDe-AgeQualiDe Study
Hajek A, Brettschneider C, Mallon T, Kaduszkiewicz H, Wiese B, Oey A, Weyerer S, Werle J, Pentzek M, Fuchs A, Röhr S, Luppa M, Weeg D, Bickel H, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
GERONTOLOGY. 2021;67(5):591-598.

Depressive Symptoms and Frailty Among the Oldest Old: Evidence From the Multicenter Prospective AgeCoDe-AgeQualiDe Study
Hajek A, Brettschneider C, Mallon T, Lühmann D, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Röhr S, Luppa M, Mösch E, Weeg D, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
J AM MED DIR ASSOC. 2021;22(3):577-582.

Determinants of Postponed Cancer Screening During the COVID-19 Pandemic: Evidence from the Nationally Representative COVID-19 Snapshot Monitoring in Germany (COSMO)
Hajek A, De Bock F, Hübl L, Kretzler B, König H
RISK MANAG HEALTHC P. 2021;14:3003-3011.

Postponed Dental Visits during the COVID-19 Pandemic and their Correlates. Evidence from the Nationally Representative COVID-19 Snapshot Monitoring in Germany (COSMO)
Hajek A, De Bock F, Huebl L, Kretzler B, König H
HEALTHCARE-BASEL. 2021;9(1):50.

Attitudes towards the economic costs associated with measures against the spread of COVID-19: Population perceptions from repeated cross-sectional data of the nationally representative COVID-19 Snapshot Monitoring in Germany (COSMO)
Hajek A, De Bock F, Sprengholz P, Kretzler B, König H
PLOS ONE. 2021;16(11):.

Health-related quality of life and ego integrity among the oldest old – Evidence from the multicenter AgeCoDe-AgeQualiDe study
Hajek A, Forstmeier S, Brettschneider C, Lühmann D, Döhring J, Wiese B, Oey A, Weyerer S, Werle J, Pentzek M, Fuchs A, Röhr S, Conrad I, Weeg D, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
ARCH GERONTOL GERIAT. 2021;95:.

Asymmetric effects of obesity on loneliness among older Germans. Longitudinal findings from the Survey of Health, Ageing and Retirement in Europe
Hajek A, König H
AGING MENT HEALTH. 2021;25(12):2293-2297.

Does obesity lead to loneliness and perceived social isolation in the second half of life? Findings from a nationally representative study in Germany
Hajek A, König H
GERIATR GERONTOL INT. 2021;21(9):836-841.

Does the beginning and the end of income poverty affect psychosocial factors among middle-aged and older adults? Findings based on nationally representative longitudinal data
Hajek A, König H
AGING MENT HEALTH. 2021;25(5):906-912.

Do Loneliness and Perceived Social Isolation Reduce Expected Longevity and Increase the Frequency of Dealing With Death and Dying? Longitudinal Findings Based on a Nationally Representative Sample
Hajek A, König H
J AM MED DIR ASSOC. 2021;22(8):1720-1725.

Do lonely and socially isolated individuals think they die earlier? The link between loneliness, social isolation and expectations of longevity based on a nationally representative sample
Hajek A, König H
PSYCHOGERIATRICS. 2021;21(4):571-576.

Flexible goal adjustment moderates the link between self-rated health and subjective well-being. Findings from the general population
Hajek A, König H
AGING MENT HEALTH. 2021;25(7):1345-1350.

Personality and Falls: Findings Based on the Survey of Health, Aging, and Retirement in Europe
Hajek A, König H
J AM MED DIR ASSOC. 2021;22(12):2605-2607.

Personality and functional impairment. Evidence from the Survey of Health, Ageing and Retirement in Europe
Hajek A, König H
PSYCHOGERIATRICS. 2021;21(6):861-868.

Self-perceptions of ageing, GP visits and frequent attendance. Longitudinal findings from the German Ageing Survey
Hajek A, König H
AGING MENT HEALTH. 2021;25(8):1493-1498.

Social Isolation and Loneliness of Older Adults in Times of the COVID-19 Pandemic: Can Use of Online Social Media Sites and Video Chats Assist in Mitigating Social Isolation and Loneliness?
Hajek A, König H
GERONTOLOGY. 2021;67(1):121-124.

The Association between Oral Health-Related Quality of Life, Loneliness, Perceived and Objective Social Isolation - Results of a Nationally Representative Survey
Hajek A, König H
INT J ENV RES PUB HE. 2021;18(24):.

The Onset of Falls Reduces Subjective Well-Being. Findings of a Nationally Representative Longitudinal Study
Hajek A, König H
FRONT PSYCHIATRY. 2021;12:599905.

The Prevalence and Correlates of Probable Major Depressive Disorder and Probable Generalized Anxiety Disorder during the COVID-19 Pandemic. Results of a Nationally Representative Survey in Germany
Hajek A, König H
INT J ENV RES PUB HE. 2021;18(23):.

Determinants of healthcare use based on the Andersen model: a study protocol for a systematic review of longitudinal studies
Hajek A, Kretzler B, König H
BMJ OPEN. 2021;11:.

Determinants of Healthcare Use Based on the Andersen Model: A Systematic Review of Longitudinal Studies
Hajek A, Kretzler B, König H
HEALTHCARE-BASEL. 2021;9(10):1354.

Factors Associated with Dental Service Use Based on the Andersen Model: A Systematic Review
Hajek A, Kretzler B, König H
INT J ENV RES PUB HE. 2021;18(5):.

Informal caregiving for adults, loneliness and social isolation: a study protocol for a systematic review
Hajek A, Kretzler B, König H
BMJ OPEN. 2021;11:.

Informal Caregiving, Loneliness and Social Isolation: A Systematic Review
Hajek A, Kretzler B, König H
INT J ENV RES PUB HE. 2021;18(22):.

Relationship between personality factors and frailty. A systematic review
Hajek A, Kretzler B, König H
ARCH GERONTOL GERIAT. 2021;97:104508.

The Association Between Obesity and Social Isolation as Well as Loneliness in the Adult Population: A Systematic Review
Hajek A, Kretzler B, König H
DIABET METAB SYND OB. 2021;14:2765-2773.

Correlates of institutionalization among the oldest old - Evidence from the multicenter AgeCoDe-AgeQualiDe study
Hajek A, Luppa M, Brettschneider C, van der Leeden C, van den Bussche H, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Löbner M, Stein J, Weeg D, Bickel H, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
INT J GERIATR PSYCH. 2021;36(7):1095-1102.

Needs and Health Care Costs ind Old Age: An Application of the Camberwell Assessment of Need for the Elderly
Hajek A, Stein J, König H
2021. Camberwell Assessment of Need for the Elderly: CANE. Hoe J, Orrell M (eds.). 2. ed. Cambridge: Cambridge University Press, 91 - 96.

Association of vision problems with psychosocial factors among middle-aged and older individuals: findings from a nationally representative study
Hajek A, Wolfram C, Spitzer M, König H
AGING MENT HEALTH. 2021;25(5):946-953.

Help-seeking for psychological distress and its association with anxiety in the oldest old - results from the AgeQualiDe cohort study
Hohls J, König H, Eisele M, Mallon T, Mamone S, Wiese B, Weyerer S, Fuchs A, Pentzek M, Roehr S, Welzel F, Mösch E, Weeg D, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, Hajek A
AGING MENT HEALTH. 2021;25(5):923-929.

Anxiety, Depression and Quality of Life-A Systematic Review of Evidence from Longitudinal Observational Studies
Hohls J, König H, Quirke E, Hajek A
INT J ENV RES PUB HE. 2021;18(22):12022.

Willingness to bear economic costs of measures against SARS-CoV-2 in Germany
König H, De Bock F, Sprengholz P, Kretzler B, Hajek A
BMC PUBLIC HEALTH. 2021;21(1):1698.

Religion and cancer prevention: study protocol for a systematic review
Kretzler B, König H, Brandt L, Hajek A
BMJ OPEN. 2021;11:.

Objective Job Demands of Oneself and One's Partner, and Depressive Symptoms. Evidence from a Nationally Representative Longitudinal Study
Kretzler B, König H, Hajek A
INT J ENV RES PUB HE. 2021;18(23):12688.

The empty nest, depressive symptoms and loneliness of older parents: Prospective findings from the German Ageing Survey
Kristensen K, König H, Hajek A
ARCH GERONTOL GERIAT. 2021;95:104425.

GPs' awareness of car driving among oldest patients - exploratory results from a primary care cohort
Leve V, Pentzek M, Fuchs A, Bickel H, Weeg D, Weyerer S, Werle J, König H, Hajek A, Luhmann D, van den Bussche H, Wiese B, Oey A, Heser K, Wagner M, Luppa M, Röhr S, Maier W, Scherer M, Kaduszkiewicz H, Riedel-Heller S
BJGP OPEN. 2021;5(2):.

Do self-reported hearing and visual impairments predict longitudinal dementia in older adults?
Pabst A, Bär J, Röhr S, Löbner M, Kleineidam L, Heser K, Hajek A, van der Leeden C, Wiese B, Maier W, Angermeyer M, Scherer M, Wagner M, König H, Riedel-Heller S
J AM GERIATR SOC. 2021;69(6):1519-1528.

Extending understanding of grandchild care on feelings of loneliness and isolation in later life: A literature review
Quirke E, König H, Hajek A
Z GERONTOL GERIATR. 2021;54(5):513-516.

What are the social consequences of beginning or ceasing to care for grandchildren? Evidence from an asymmetric fixed effects analysis of community dwelling adults in Germany
Quirke E, König H, Hajek A
AGING MENT HEALTH. 2021;25(5):969-975.

Association of Alcohol and Tobacco Consumption with Depression Severity in the Oldest Old. Results from the Age Different Old Age Cohort Platform
Quittschalle J, Pabst A, Löbner M, Luppa M, Heser K, Wagner M, Bussche van den H, Hajek A, König H, Wiese B, Angermeyer M, Maier W, Scherer M, Riedel-Heller S
INT J ENV RES PUB HE. 2021;18(15):7959.

The Relationship between Income and Morbidity-Longitudinal Findings from the German Ageing Survey
Reche E, König H, Hajek A
INT J ENV RES PUB HE. 2021;18(23):12365.

Disorientation in Time and Place in Old Age: Longitudinal Evidence from Three Old Age Cohorts in Germany (AgeDifferent.de Platform)
Rodriguez F, Pabst A, Heser K, Kleineidam L, Hajek A, Eisele M, Röhr S, Löbner M, Wiese B, Angermeyer M, Maier W, Scherer M, Wagner M, König H, Riedel-Heller S
J ALZHEIMERS DIS. 2021;79(4):1589-1599.

Grief and loss in old age: Exploration of the association between grief and depression
Schladitz K, Löbner M, Stein J, Weyerer S, Werle J, Wagner M, Heser K, Scherer M, Stark A, Kaduszkiewicz H, Wiese B, Oey A, König H, Hajek A, Riedel-Heller S
J AFFECT DISORDERS. 2021;283:285-292.

Determinants of dental treatment avoidance: findings from a nationally representative study
Spinler K, Aarabi G, Walther C, Valdez R, Heydecke G, Buczak-Stec E, König H, Hajek A
AGING CLIN EXP RES. 2021;33(5):1337-1343.

Do postponed dental visits for financial reasons reduce quality of life? Evidence from the Survey of Health, Ageing and Retirement in Europe
Valdez R, Aarabi G, Spinler K, Walther C, Kofahl C, Buczak-Stec E, Heydecke G, König H, Hajek A
AGING CLIN EXP RES. 2021;33(2):437-442.

Determinants of health-related quality of life (HRQoL) among homeless individuals during the COVID-19 pandemic
van Rüth V, König H, Bertram F, Schmiedel P, Ondruschka B, Püschel K, Heinrich F, Hajek A
PUBLIC HEALTH. 2021;194:60-66.

Postponed Dental Appointments Due to Costs Are Associated with Increased Loneliness-Evidence from the Survey of Health, Ageing and Retirement in Europe
Walther C, Aarabi G, Valdez R, Spinler K, Heydecke G, Buczak-Stec E, König H, Hajek A
INT J ENV RES PUB HE. 2021;18(1):336.

Are informal family caregivers stigmatized differently based on their gender or employment status?: a German study on public stigma towards informal long-term caregivers of older individuals
Zwar L, Angermeyer M, Matschinger H, Riedel-Heller S, König H, Hajek A
BMC PUBLIC HEALTH. 2021;21(1):1868.

Public stigma towards informal caregiving in Germany: a descriptive study
Zwar L, Angermeyer M, Matschinger H, Riedel-Heller S, König H, Hajek A
AGING MENT HEALTH. 2021;25(8):1515-1524.

The importance of familiarity with caregiving for public caregiver stigma: Evidence from a cross-sectional study in Germany
Zwar L, Angermeyer M, Matschinger H, Riedel-Heller S, König H, Hajek A
ARCH GERONTOL GERIAT. 2021;93:.

Do Informal Caregivers Expect to Die Earlier? A Longitudinal Study with a Population-Based Sample on Subjective Life Expectancy of Informal Caregivers
Zwar L, König H, Hajek A
GERONTOLOGY. 2021;67(4):467-481.

Frequent attendance in primary care in the oldest old: evidence from the AgeCoDe-AgeQualiDe study
Buczak-Stec E, Hajek A, van den Bussche H, Eisele M, Wiese B, Mamone S, Weyerer S, Werle J, Fuchs A, Pentzek M, Röhr S, Welzel F, Weeg D, Mösch E, Heser K, Wagner M, Riedel-Heller S, Maier W, Scherer M, König H
AGING CLIN EXP RES. 2020;32(12):2629-2638.

Long-Term Care Preferences and Sexual Orientation: Protocol for a Systematic Review
Buczak-Stec E, König H, Feddern L, Hajek A
HEALTHCARE-BASEL. 2020;8(4):572.

How does the onset of incontinence affect satisfaction with life among older women and men? Findings from a nationally representative longitudinal study (German Ageing Survey)
Buczak-Stec E, König H, Hajek A
HEALTH QUAL LIFE OUT. 2020;18:16.

Impact of stroke on affective well-being: findings from a large longitudinal nationally representative study
Buczak-Stec E, König H, Hajek A
AGING MENT HEALTH. 2020;24(12):2006-2013.

Correlates of hospitalization among the oldest old: results of the AgeCoDe-AgeQualiDe prospective cohort study
Hajek A, Brettschneider C, Eisele M, Kaduszkiewicz H, Mamone S, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Luck T, Weeg D, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
AGING CLIN EXP RES. 2020;32(7):1295-1301.

Führt eine Zunahme depressiver Symptome zu einer Zunahme funktioneller Einschränkungen oder vice versa? Ergebnisse der AgeCoDe/AgeQualiDe-Studie
Hajek A, Brettschneider C, Lühmann D, van den Bussche H, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Gühne U, Riedel-Heller S, Weeg D, Bickel H, Heser K, Wagner M, Maier W, Scherer M, Röhr S, König H
PSYCHIAT PRAX. 2020;47(3):148-153.

Which Factors Contribute to Frailty among the Oldest Old? Results of the Multicentre Prospective AgeCoDe and AgeQualiDe Study
Hajek A, Brettschneider C, Röhr S, Gühne U, van der Leeden C, Lühmann D, Mamone S, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Weeg D, Mösch E, Heser K, Wagner M, Maier W, Riedel-Heller S, Scherer M, König H
GERONTOLOGY. 2020;66(5):460-466.

Needs and health care costs in old age: a longitudinal perspective: results from the AgeMooDe study
Hajek A, Brettschneider C, Scherer M, Stark A, Kaduszkiewicz H, Weyerer S, Werle J, Miebach L, Heser K, Wiese B, Mamone S, Stein J, Löbner M, Riedel-Heller S, König H
AGING MENT HEALTH. 2020;24(10):1763-1768.

Prevalence and factors associated with obesity among the oldest old
Hajek A, Brettschneider C, van der Leeden C, Lühmann D, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Röhr S, Löbner M, Mösch E, Bickel H, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
ARCH GERONTOL GERIAT. 2020;89:.

Reductions in cognitive functioning are associated with decreases in satisfaction with aging. Longitudinal findings based on a nationally representative sample
Hajek A, Buczak-Stec E, Riedel-Heller S, König H
ARCH GERONTOL GERIAT. 2020;89:104072.

Perceptions of Health Care Use in Germany during the COVID-19 Pandemic
Hajek A, De Bock F, Wieler L, Sprengholz P, Kretzler B, König H
INT J ENV RES PUB HE. 2020;17(24):9351.

Determinants of Willingness to Pay for Health Insurance in Germany-Results of the Population-Based Health Study of the Leipzig Research Centre for Civilization Diseases (LIFE-Adult-Study)
Hajek A, Enzenbach C, Stengler K, Glaesmer H, Hinz A, Röhr S, Stein J, Riedel-Heller S, König H
FRONT PUBLIC HEALTH. 2020;8:456.

Beyond symptoms: why do patients see the doctor?
Hajek A, König H
BJGP OPEN. 2020;4(2):.

Determinants of Perceived Own Risk for Developing Dementia and the Perception That Memory Deterioration Is Preventable. Findings From the General Adult Population in Germany
Hajek A, König H
FRONT MED-LAUSANNE. 2020;7:203.

Dual sensory impairment and healthcare use: Findings from a nationally representative sample
Hajek A, König H
GERIATR GERONTOL INT. 2020;20(6):602-606.

Dual sensory impairment and psychosocial factors. Findings based on a nationally representative sample
Hajek A, König H
ARCH GERONTOL GERIAT. 2020;91:.

Fear of Dementia in the General Population: Findings from the German Socio-Economic Panel (GSOEP)
Hajek A, König H
J ALZHEIMERS DIS. 2020;75(4):1135-1140.

Feeling too old? Consequences for subjective well-being. Longitudinal findings from the German Ageing Survey
Hajek A, König H
ARCH GERONTOL GERIAT. 2020;90:.

How do cat owners, dog owners and individuals without pets differ in terms of psychosocial outcomes among individuals in old age without a partner?
Hajek A, König H
AGING MENT HEALTH. 2020;24(10):1613-1619.

Prevalence and Correlates of Individuals Screening Positive for Depression and Anxiety on the PHQ-4 in the German General Population: Findings from the Nationally Representative German Socio-Economic Panel (GSOEP)
Hajek A, König H
INT J ENV RES PUB HE. 2020;17(21):7865.

The Association of Post-Materialism with Health Care Use. Findings of a General Population Survey in Germany
Hajek A, König H
INT J ENV RES PUB HE. 2020;17(23):8869.

The moderating role of flexible goal adjustment in the link between pain and depressive symptoms: findings based on a nationally representative sample of older adults
Hajek A, König H
PSYCHOGERIATRICS. 2020;20(5):602-607.

The onset of falls reduces perceived autonomy among middle aged and older adults. Results from a longitudinal nationally representative sample
Hajek A, König H
ARCH GERONTOL GERIAT. 2020;90:104115.

What are the psychosocial consequences when fear of falling starts or ends?Evidence from an asymmetric fixed effects analysis based on longitudinal data from the general population
Hajek A, König H
INT J GERIATR PSYCH. 2020;35(9):1028-1035.

Which factors contribute to loneliness among older Europeans? Findings from the Survey of Health, Ageing and Retirement in Europe: Determinants of loneliness
Hajek A, König H
ARCH GERONTOL GERIAT. 2020;89:104080.

Determinants of Dental Service Use Based on the Andersen Model: A Study Protocol for a Systematic Review
Hajek A, Kretzler B, König H
HEALTHCARE-BASEL. 2020;8(3):333.

Determinants of Frequent Attendance in Primary Care. Study Protocol for a Systematic Review of Longitudinal Studies
Hajek A, Kretzler B, König H
INT J ENV RES PUB HE. 2020;17(10):3710.

Multimorbidity, Loneliness, and Social Isolation. A Systematic Review
Hajek A, Kretzler B, König H
INT J ENV RES PUB HE. 2020;17(22):8688.

Personality and the use of cancer screenings. A systematic review
Hajek A, Kretzler B, König H
PLOS ONE. 2020;15(12):e0244655.

Personality, Healthcare Use and Costs-A Systematic Review
Hajek A, Kretzler B, König H
HEALTHCARE-BASEL. 2020;8(3):329.

Prevalence Of, and Factors Associated with, Obesity among the Oldest Old. A Study Protocol for a Systematic Review
Hajek A, Kretzler B, König H
HEALTHCARE-BASEL. 2020;8(3):319.

Perceived social isolation and cognitive functioning. Longitudinal findings based on the German Ageing Survey
Hajek A, Riedel-Heller S, König H
INT J GERIATR PSYCH. 2020;35(3):276-281.

Sex-Specific Associations Between Depressive Symptoms and Risk for Subsequent Dementia
Heser K, Kleineidam L, Pabst A, Wiese B, Roehr S, Löbner M, Hajek A, van der Leeden C, Angermeyer M, Scherer M, König H, Maier W, Riedel-Heller S, Wagner M
J ALZHEIMERS DIS. 2020;74(1):151-161.

Late-life depressive symptoms are associated with functional impairment cross-sectionally and over time: Results of the AgeMooDe study
Heser K, Stein J, Luppa M, Wiese B, Mamone S, Weyerer S, Werle J, König H, Hajek A, Scherer M, Stark A, Kaduszkiewicz H, Maier W, Riedel-Heller S, Wagner M
J GERONTOL B-PSYCHOL. 2020;75(4):811-820.

EQ-5D-3L health status and health state utilities of the oldest-old (85 +) in Germany: results from the AgeCoDe-AgeQualiDe study
König H, Brettschneider C, Lühmann D, Kaduszkiewicz H, Oey A, Wiese B, Werle J, Weyerer S, Fuchs A, Pentzek M, Conrad I, Röhr S, Weeg D, Bickel H, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, Hajek A
QUAL LIFE RES. 2020;29:3223-3232.

Religious Attendance and Cancer Screening Behavior
Kretzler B, König H, Hajek A
FRONT ONCOL. 2020;10:583925.

The link between falls, social isolation and loneliness A systematic review
Petersen N, König H, Hajek A
ARCH GERONTOL GERIAT. 2020;88:104020.

Personality Factors and Sick Leave Days. Evidence from a Nationally Representative Longitudinal Study in Germany
Raynik Y, König H, Hajek A
INT J ENV RES PUB HE. 2020;17(3):1089.

Differences in Self-Esteem Between Cat Owners, Dog Owners, and Individuals Without Pets
Schulz C, König H, Hajek A
FRONT VET SCI. 2020;7(552):552.

Association between Subjective Well-Being and Frequent Dental Visits in the German Ageing Survey
Valdez R, Aarabi G, Spinler K, Walther C, Seedorf U, Heydecke G, Buczak-Stec E, König H, Hajek A
INT J ENV RES PUB HE. 2020;17(9):3207.

Psychosocial consequences of transitioning into informal caregiving in male and female caregivers: Findings from a population-based panel study
Zwar L, König H, Hajek A
SOC SCI MED. 2020;264:.

The impact of receiving informal care on self-esteem and its moderation by social class
Zwar L, König H, Hajek A
AGING MENT HEALTH. 2020;24(10):1736-1745.

Determinants of Postponed Dental Visits Due to Costs: Evidence from the Survey of Health, Ageing, and Retirement in Germany
Aarabi G, Valdez R, Spinler K, Walther C, Seedorf U, Heydecke G, König H, Hajek A
INT J ENV RES PUB HE. 2019;16(18):3344.

Personality Traits and Obesity
Bagnjuk J, König H, Hajek A
INT J ENV RES PUB HE. 2019;16(15):2675.

Determinants of health-care costs in the oldest-old in Germany
Brettschneider C, Hajek A, Röhr S, Fuchs A, Weeg D, Mamone S, Werle J, Heser K, Mallon T, Stein J, Pentzek M, Bickel H, Wiese B, Weyerer S, Wagner M, van den Bussche H, Maier W, Scherer M, Riedel-Heller S, König H
J ECON AGEING. 2019;14:100200.

The link between sexual satisfaction and subjective well-being: a longitudinal perspective based on the German Ageing Survey
Buczak-Stec E, König H, Hajek A
QUAL LIFE RES. 2019;28(11):3025-3035.

The association between voluntary work and health care use among older adults in Germany
Flennert M, König H, Hajek A
BMC HEALTH SERV RES. 2019;19(1):39.

Are older men more vulnerable to depression than women after losing their spouse?: Evidence from three German old-age cohorts (AgeDifferent.de platform)
Förster F, Pabst A, Stein J, Röhr S, Löbner M, Heser K, Miebach L, Stark A, Hajek A, Wiese B, Maier W, Angermeyer M, Scherer M, Wagner M, König H, Riedel-Heller S
J AFFECT DISORDERS. 2019;256:650-657.

Determinants of Frequent Attendance of Outpatient Physicians: A Longitudinal Analysis Using the German Socio-Economic Panel (GSOEP)
Hadwiger M, König H, Hajek A
INT J ENV RES PUB HE. 2019;16(9):1553.

Does transpersonal trust moderate the association between chronic conditions and general practitioner visits in the oldest old? Results of the AgeCoDe and AgeQualiDe study
Hajek A, Brettschneider C, Eisele M, Lühmann D, Mamone S, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Luck T, Weeg D, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
GERIATR GERONTOL INT. 2019;19(8):705-710.

Prevalence and determinants of driving habits in the oldest old: Results of the multicenter prospective AgeCoDe-AgeQualiDe study
Hajek A, Brettschneider C, Eisele M, van den Bussche H, Wiese B, Mamone S, Weyerer S, Werle J, Leve V, Pentzek M, Röhr S, Stein J, Bickel H, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
ARCH GERONTOL GERIAT. 2019;82:245-250.

Are perceived bad working conditions and perceived workplace bullying associated with doctor visits?: Results of the nationally representative German General Social Survey
Hajek A, König H
BMC HEALTH SERV RES. 2019;19:697.

Does Loneliness Predict Subsequent Use of Flu Vaccination? Findings from a Nationally Representative Study of Older Adults in Germany
Hajek A, König H
INT J ENV RES PUB HE. 2019;16(24): E4978.

Falls Are Associated With Decreased Autonomy, and Self-Efficacy Moderates This Relation: Results From a National Study
Hajek A, König H
FRONT PSYCHIATRY. 2019;10:447.

Impact of informal caregiving on loneliness and satisfaction with leisure-time activities. Findings of a population-based longitudinal study in germany
Hajek A, König H
AGING MENT HEALTH. 2019;23(11):1539-1545.

Meaning in life and health care use: findings from a nationally representative study of older adults in Germany
Hajek A, König H
BMC GERIATR. 2019;19(1):368.

Not Getting What You Want? The Impact of Income Comparisons on Subjective Well-Being-Findings of a Population-Based Longitudinal Study in Germany
Hajek A, König H
INT J ENV RES PUB HE. 2019;16(15):2655.

Obesity and loneliness. Findings from a longitudinal population-based study in the second half of life in Germany
Hajek A, König H
PSYCHOGERIATRICS. 2019;19(2):135-140.

Self-Rated Health and Social Exclusion: Does Gardening Moderate This Relation? Evidence from the German Ageing Survey
Hajek A, König H
INT J ENV RES PUB HE. 2019;16(10):1834.

The association between use of online social networks sites and perceived social isolation among individuals in the second half of life: results based on a nationally representative sample in Germany
Hajek A, König H
BMC PUBLIC HEALTH. 2019;19:40.

The role of optimism, self-esteem, and self-efficacy in moderating the relation between health comparisons and subjective well-being: Results of a nationally representative longitudinal study among older adults
Hajek A, König H
BRIT J HEALTH PSYCH. 2019;24(3):547-570.

Longitudinal association between panic disorder and health care costs in older adults
Hohls J, König H, Heider D, Brenner H, Böhlen F, Matschinger H, Saum K, Schöttker B, Haefeli W, Hajek A, Wild B
DEPRESS ANXIETY. 2019;36(12):1135-1142.

Association between anxiety, depression and quality of life: study protocol for a systematic review of evidence from longitudinal studies
Hohls J, König H, Quirke E, Hajek A
BMJ OPEN. 2019;9(e027218):.

Association of Anxiety Symptoms with Health Care Use and Costs in People Aged 85 and Over
Hohls J, König H, van den Bussche H, Eisele M, Wiese B, Oey A, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Röhr S, Mösch E, Bickel H, Heser K, Miebach L, Scherer M, Maier W, Riedel-Heller S, Hajek A
INT J GERIATR PSYCH. 2019;34(5):765-776.

Association of generalized anxiety symptoms and panic with health care costs in older age—Results from the ESTHER cohort study
Hohls J, Wild B, Heider D, Brenner H, Böhlen F, Saum K, Schöttker B, Matschinger H, Haefeli W, König H, Hajek A
J AFFECT DISORDERS. 2019;245:978-986.

What Is Successful Aging? A Psychometric Validation Study of Different Construct Definitions
Kleineidam L, Thoma M, Maercker A, Bickel H, Mösch E, Hajek A, König H, Eisele M, Mallon T, Luck T, Röhr S, Weyerer S, Werle J, Pentzek M, Fuchs A, Wiese B, Mamone S, Scherer M, Maier W, Riedel-Heller S, Wagner M
GERONTOLOGIST. 2019;59(4):738-748.

The association of multimorbidity, loneliness, social exclusion and network size: findings from the population-based German Ageing Survey
Kristensen K, König H, Hajek A
BMC PUBLIC HEALTH. 2019;19(1):1383.

The longitudinal association of multimorbidity on loneliness and network size: Findings from a population-based study
Kristensen K, König H, Hajek A
INT J GERIATR PSYCH. 2019;34(10):1490-1497.

Osteoporosis, Fear of Falling, and Restrictions in Daily Living. Evidence From a Nationally Representative Sample of Community-Dwelling Older Adults
Meyer F, König H, Hajek A
FRONT ENDOCRINOL. 2019;10:646.

Association between caring for grandchildren and feelings of loneliness, social isolation and social network size: a cross-sectional study of community dwelling adults in Germany
Quirke E, König H, Hajek A
BMJ OPEN. 2019;9:e029605.

Income, Self-Rated Health, and Morbidity. A Systematic Review of Longitudinal Studies
Reche E, König H, Hajek A
INT J ENV RES PUB HE. 2019;16(16):2884.

Prevalence and determinants of dental visits among older adults: findings of a nationally representative longitudinal study
Spinler K, Aarabi G, Valdez R, Kofahl C, Heydecke G, König H, Hajek A
BMC HEALTH SERV RES. 2019;19(1):590.

Prevalence of Anxiety Symptoms and Their Association With Loss Experience in a Large Cohort Sample of the Oldest-Old. Results of the AgeCoDe/AgeQualiDe Study
Welzel F, Stein J, Röhr S, Fuchs A, Pentzek M, Mösch E, Bickel H, Weyerer S, Werle J, Wiese B, Oey A, Hajek A, König H, Heser K, Keineidam L, van den Bussche H, van der Leeden C, Maier W, Scherer M, Wagner M, Riedel-Heller S
FRONT PSYCHIATRY. 2019;10:285.

Life satisfaction of informal care recipients: Findings from the German Ageing Survey
Zwar L, König H, Hajek A
BRIT J HEALTH PSYCH. 2019;24(4):859-875.

The Longitudinal Association between Psychological Factors and Health Care Use
Bock J, Hajek A, König H
HEALTH SERV RES. 2018;53(2):1065-1091.

Unterschiede in Kognition, Depressivität und gesundheitsbezogener Lebensqualität zwischen Versicherten der GKV und PKV im hohen Alter
Bock J, Hajek A, Lühmann D, Ernst A, Mamone S, Wiese B, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Luck T, Bickel H, Weeg D, Wagner M, Scherer M, Riedel-Heller S, Maier W, König H
PSYCHIAT PRAX. 2018;45(3):148-153.

Informelle Pflege bei Demenz nach Leistungsarten
Brettschneider C, Hajek A, Stein J, Luck T, Mamone S, Wiese B, Mösch E, Weeg D, Fuchs A, Pentzek M, Werle J, Weyerer S, Mallon T, van den Bussche H, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
NERVENARZT. 2018;89(5):509-515.

Impact of Incident Parkinson's Disease on Satisfaction With Life
Buczak-Stec E, König H, Hajek A
FRONT NEUROL. 2018;9:589.

Psychological correlates of fear of falling: Findings from the German Aging Survey
Hajek A, Bock J, König H
GERIATR GERONTOL INT. 2018;18(3):396-406.

The use of routine health check-ups and psychological factors---a neglected link. Evidence from a population-based study
Hajek A, Bock J, König H
J PUBLIC HEALTH-HEID. 2018;26(2):137-144.

Frailty and healthcare costs—longitudinal results of a prospective cohort study
Hajek A, Bock J, Saum K, Matschinger H, Brenner H, Holleczek B, Haefeli W, Heider D, König H
AGE AGEING. 2018;47(2):233-241.

Unterschiede in der Morbidität nach Krankenversichertenstatus im Alter
Hajek A, Bock J, Saum K, Schöttker B, Brenner H, Heider D, König H
GESUNDHEITSWESEN. 2018;80(6):551-556.

Longitudinal Analysis of Outpatient Physician Visits in the Oldest Old: Results of the Agequalide Prospective Cohort Study
Hajek A, Brettschneider C, van den Bussche H, Kaduszkiewicz H, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Luck T, Bickel H, Mösch E, Heser K, Bleckwenn M, Scherer M, Riedel-Heller S, Maier W, König H
J NUTR HEALTH AGING. 2018;22(6):689-694.

Impact of falls on depressive symptoms among the oldest old: Results from the AgeQualiDe study
Hajek A, Brettschneider C, van den Bussche H, Lühmann D, Oey A, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Luck T, Bickel H, Mösch E, Heser K, Wagner M, Scherer M, Maier W, Riedel-Heller S, König H
INT J GERIATR PSYCH. 2018;33(10):1383-1388.

Are changes in body-mass-index associated with changes in depressive symptoms? Findings of a population-based longitudinal study among older Germans
Hajek A, König H
BMC PSYCHIATRY. 2018;18(1):182.

Does informal caregiving affect self-esteem? Results from a population-based study of individuals aged 40 and over in Germany from 2002 to 2014
Hajek A, König H
SCAND J CARING SCI. 2018;32(3):1047-1055.

Informal caregiving and personality: Results of a population-based longitudinal study in Germany
Hajek A, König H
PLOS ONE. 2018;13(9):e0203586.

The association between obesity and social exclusion in middle-aged and older adults: findings from a nationally representative study in Germany
Hajek A, König H
BMC GERIATR. 2018;18(1):258.

The Association Between Self-Regulation and Daily Sports Activities in a Nationally Representative Sample of Older Adults. Findings From the German Ageing Survey
Hajek A, König H
FRONT PHYSIOL. 2018;9:1763.

The relation between personality, informal caregiving, life satisfaction and health-related quality of life: evidence of a longitudinal study
Hajek A, König H
QUAL LIFE RES. 2018;27(5):1249-1256.

Which factors lead to frequent attendance in the outpatient sector among individuals in the second half of life?: Evidence from a population-based longitudinal study in Germany
Hajek A, König H
BMC HEALTH SERV RES. 2018;18(1):673.

Correlates of preferences for autonomy in long-term care: results of a population-based survey among older individuals in Germany
Hajek A, Lehnert T, Wegener A, Riedel-Heller S, König H
PATIENT PREFER ADHER. 2018;12:71-78.

Do Individuals in Old Age Prepare for the Risk of Long-Term Care? Results of A Population-Based Survey in Germany
Hajek A, Lehnert T, Wegener A, Riedel-Heller S, König H
INT J ENV RES PUB HE. 2018;15(10):2189.

Informelles Pflegepotenzial bei Älteren in Deutschland
Hajek A, Lehnert T, Wegener A, Riedel-Heller S, König H
Z GERONTOL GERIATR. 2018;51(6):612-619.

Langzeitpflegepräferenzen der Älteren in Deutschland – Ergebnisse einer bevölkerungsrepräsentativen Umfrage
Hajek A, Lehnert T, Wegener A, Riedel-Heller S, König H
GESUNDHEITSWESEN. 2018;80(8-09):685-692.

A systematic review of the association of anxiety with health care utilization and costs in people aged 65 years and older
Hohls J, König H, Raynik Y, Hajek A
J AFFECT DISORDERS. 2018;232:163-176.

Preferences for home- and community-based long-term care services in Germany: a discrete choice experiment
Lehnert T, Günther O, Hajek A, Riedel-Heller S, König H
EUR J HEALTH ECON. 2018;19(9):1213-1223.

Leadership position and physician visits - results of a nationally representative longitudinal study in Germany
Reber K, König H, Hajek A
J OCCUP MED TOXICOL. 2018;13:33.

Obesity and sickness absence: results from a longitudinal nationally representative sample from Germany
Reber K, König H, Hajek A
BMJ OPEN. 2018;8(6):e019839.

The role of optimism in the relationship between job stress and depressive symptoms. Longitudinal findings from the German Ageing Survey
Romswinkel E, König H, Hajek A
J AFFECT DISORDERS. 2018;241:249-255.

Consequences of different types of informal caregiving for mental, self-rated, and physical health: longitudinal findings from the German Ageing Survey
Zwar L, König H, Hajek A
QUAL LIFE RES. 2018;27(10):2667-2679.

The impact of different types of informal caregiving on cognitive functioning of older caregivers: Evidence from a longitudinal, population-based study in Germany
Zwar L, König H, Hajek A
SOC SCI MED. 2018;214:12 - 19.

Regionale Unterschiede bei demografischer Alterung
Alltag S, Nowossadeck S, Stein J, Hajek A, König H, Riedel-Heller S, Nowossadeck E
PSYCHIAT PRAX. 2017;44(7):413-416.

A Longitudinal Investigation of Willingness to Pay for Health Insurance in Germany
Bock J, Hajek A, Brenner H, Saum K, Matschinger H, Haefeli W, Schöttker B, Quinzler R, Heider D, König H
HEALTH SERV RES. 2017;53(3):1099-1117.

Psychological determinants of influenza vaccination
Bock J, Hajek A, König H
BMC GERIATR. 2017;17:194.

The Impact of Depressive Symptoms on Healthcare Costs in Late Life: Longitudinal Findings From the AgeMooDe Study
Bock J, Hajek A, Weyerer S, Werle J, Wagner M, Maier W, Stark A, Kaduszkiewicz H, Wiese B, Moor L, Stein J, Riedel-Heller S, König H
AM J GERIAT PSYCHIAT. 2017;25(2):131-141.

Welche Faktoren beeinflussen die privaten Zuzahlungen zu Gesundheitsleistungen im Alter? Ergebnisse einer Längsschnittstudie: Ergebnisse einer Längsschnittstudie
Hajek A, Bock J, Brenner H, Saum K, Matschinger H, Haefeli W, Quinzler R, Heider D, König H
GESUNDHEITSWESEN. 2017;79(2):e18-e25.

Association of general psychological factors with frequent attendance in primary care: a population-based cross-sectional observational study
Hajek A, Bock J, König H
BMC PRIM CARE. 2017;18(1):48.

Association of informal caregiving with body mass index and frequency of sporting activities: evidence of a population-based study in Germany
Hajek A, Bock J, König H
BMC PUBLIC HEALTH. 2017;17(1):755.

Psychosocial correlates of unintentional weight loss in the second half of life in the German general population
Hajek A, Bock J, König H
PLOS ONE. 2017;12(10):e0185749.

The role of general psychosocial factors for the use of cancer screening—Findings of a population-based observational study among older adults in Germany
Hajek A, Bock J, König H
CANCER MED-US. 2017;6(12):3025-3039.

The role of personality in health care use. Results of a population-based longitudinal study in Germany
Hajek A, Bock J, König H
PLOS ONE. 2017;12(7):e0181716.

Which factors affect health care use among older Germans? Results of the German ageing survey
Hajek A, Bock J, König H
BMC HEALTH SERV RES. 2017;17(1):30.

Correlates of alcohol consumption among Germans in the second half of life. Results of a population-based observational study
Hajek A, Bock J, Weyerer S, König H
BMC GERIATR. 2017;17(1):207.

Disentangling the complex relation of disability and depressive symptoms in old age - findings of a multicenter prospective cohort study in Germany
Hajek A, Brettschneider C, Eisele M, Lühmann D, Mamone S, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Luck T, Bickel H, Mösch E, Heser K, Wagner M, Maier W, Scherer M, Riedel-Heller S, König H
INT PSYCHOGERIATR. 2017;29(6):885-895.

Einflussfaktoren auf die Pflegebedürftigkeit im Längsschnitt
Hajek A, Brettschneider C, Ernst A, Posselt T, Mamone S, Wiese B, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Luck T, Bickel H, Mösch E, Kleineidam L, Heser K, Maier W, Scherer M, Riedel-Heller S, König H
GESUNDHEITSWESEN. 2017;79(2):73-79.

Does visual impairment affect social ties in late life? Findings of a multicenter prospective cohort study in Germany
Hajek A, Brettschneider C, Lühmann D, Eisele M, Mamone S, Wiese B, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Luck T, Bickel H, Weeg D, Heser K, Jessen F, Maier W, Scherer M, Riedel-Heller S, König H
J NUTR HEALTH AGING. 2017;21(6):692-698.

The impact of social engagement on health-related quality of life and depressive symptoms in old age - evidence from a multicenter prospective cohort study in Germany
Hajek A, Brettschneider C, Mallon T, Ernst A, Mamone S, Wiese B, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Luck T, Bickel H, Weeg D, Wagner M, Heser K, Maier W, Scherer M, Riedel-Heller S, König H
HEALTH QUAL LIFE OUT. 2017;15:140.

How does social support affect functional impairment in late life? Findings of a multicenter prospective cohort study in Germany
Hajek A, Brettschneider C, Mallon T, van der Leeden C, Mamone S, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Riedel-Heller S, Stein J, Bickel H, Weeg D, Heser K, Wagner M, Maier W, Scherer M, Luck T, König H
AGE AGEING. 2017;46(5):813-820.

Falls and subjective well-being. Results of the population-based German Ageing Survey
Hajek A, König H
ARCH GERONTOL GERIAT. 2017;72:181 - 186.

Locus of control and frequency of physician visits: Results of a population-based longitudinal study in Germany
Hajek A, König H
BRIT J HEALTH PSYCH. 2017;22(3):414-428.

Self-efficacy moderates the relationship between health comparisons and social exclusion: results of the German ageing survey
Hajek A, König H
HEALTH QUAL LIFE OUT. 2017;15(1):252.

The association of falls with loneliness and social exclusion: evidence from the DEAS German Ageing Survey
Hajek A, König H
BMC GERIATR. 2017;17(1):204.

The Curvilinear Effect of BMI on Functional Health - Evidence of the Long-Running German Ageing Survey
Hajek A, König H
OBESITY FACTS. 2017;10(3):252-260.

The longitudinal association between informal caregiving and body mass index in the second half of life - findings of the German Ageing Survey
Hajek A, König H
PUBLIC HEALTH. 2017;151:81-86.

The role of flexible goal adjustment in the effect of informal caregiving on depressive symptoms: Evidence of a large population-based longitudinal study in Germany from 2002 to 2011
Hajek A, König H
QUAL LIFE RES. 2017;26(2):419-427.

The role of self-efficacy, self-esteem and optimism for using routine health check-ups in a population-based sample. A longitudinal perspective
Hajek A, König H
PREV MED. 2017;105:47-51.

Factors associated with preferences for long-term care settings in old age: evidence from a population-based survey in Germany
Hajek A, Lehnert T, Wegener A, Riedel-Heller S, König H
BMC HEALTH SERV RES. 2017;17(1):156.

Who should take care of me? Preferences of old age individuals for characteristics of professional long-term caregivers: an observational cross-sectional study
Hajek A, Lehnert T, Wegener A, Riedel-Heller S, König H
BMC RES NOTES. 2017;10(1):382.

Factors affecting functional impairment among elderly Germans - Results of a longitudinal study
Hajek A, Luck T, Brettschneider C, Posselt T, Lange C, Wiese B, Steinmann S, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Bickel H, Mösch E, Wagner M, Heser K, Maier W, Scherer M, Riedel-Heller S, König H
J NUTR HEALTH AGING. 2017;21(3):299-306.

Frequent attenders in late life in primary care: a systematic review of European studies
Welzel F, Stein J, Hajek A, König H, Riedel-Heller S
BMC PRIM CARE. 2017;18(1):104.

Mapping the Beck Depression Inventory to the EQ-5D-3L in Patients with Depressive Disorders
Grochtdreis T, Brettschneider C, Hajek A, Schierz K, Hoyer J, Koenig H
J MENT HEALTH POLICY. 2016;19(2):79-89.

Longitudinal predictors of informal and formal caregiving time in community-dwelling dementia patients
Hajek A, Brettschneider C, Ernst A, Posselt T, Wiese B, Prokein J, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Riedel-Heller S, Bickel H, Mösch E, Heser K, Jessen F, Maier W, Scherer M, König H
SOC PSYCH PSYCH EPID. 2016;51(4):607-616.

Gender differences in the effect of social support on health-related quality of life - results of a population-based prospective cohort study in old age in Germany
Hajek A, Brettschneider C, Lange C, Posselt T, Wiese B, Steinmann S, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Luck T, Bickel H, Mösch E, Wolfsgruber S, Heser K, Maier W, Scherer M, Riedel-Heller S, König H
QUAL LIFE RES. 2016;25(5):1159-1168.

Effect of Visual Impairment on Physical and Cognitive Function in Old Age: Findings of a Population-Based Prospective Cohort Study in Germany
Hajek A, Brettschneider C, Lühmann D, Eisele M, Mamone S, Wiese B, Weyerer S, Werle J, Pentzek M, Fuchs A, Riedel-Heller S, Luck T, Bickel H, Weeg D, Koppara A, Wagner M, Scherer M, Maier W, König H
J AM GERIATR SOC. 2016;64(11):2311-2316.

Predictors of frailty in old age–results of a longitudinal study
Hajek A, Brettschneider C, Posselt T, Lange C, Mamone S, Wiese B, Weyerer S, Werle J, Fuchs A, Pentzek M, Stein J, Luck T, Bickel H, Mösch E, Heser K, Jessen F, Maier W, Scherer M, Riedel-Heller S, König H
J NUTR HEALTH AGING. 2016;20(9):952-957.

Effect of Health Comparisons on Functional Health and Depressive Symptoms - Results of a Population-Based Longitudinal Study of Older Adults in Germany
Hajek A, König H
PLOS ONE. 2016;11(5):e0156235.

Informal Caregiving and Subjective Well-Being: Evidence of a Population-Based Longitudinal Study of Older Adults in Germany
Hajek A, König H
J AM MED DIR ASSOC. 2016;17(4):300-305.

Longitudinal Predictors of Functional Impairment in Older Adults in Europe – Evidence from the Survey of Health, Ageing and Retirement in Europe
Hajek A, König H
PLOS ONE. 2016;11(1):e0146967.

Negative Health Comparisons Decrease Affective and Cognitive Well-Being in Older Adults. Evidence from a Population-Based Longitudinal Study in Germany.
Hajek A, König H
FRONT PSYCHOL. 2016;7:999.

The Effect of Intra- and Intergenerational Caregiving on Subjective Well-Being – Evidence of a Population Based Longitudinal Study among Older Adults in Germany
Hajek A, König H
PLOS ONE. 2016;11(2):e0148916.

Determinants of health-related quality of life in older primary care patients: results of the longitudinal observational AgeCoDe Study
Eisele M, Kaduszkiewicz H, König H, Lange C, Wiese B, Prokein J, Weyerer S, Werle J, Riedel-Heller S, Luppa M, Heser K, Koppara A, Mösch E, Weeg D, Fuchs A, Pentzek M, Maier W, Scherer M, Hajek A
BRIT J GEN PRACT. 2015;65(640):e716-23.

Mapping the Beck Depression Inventory to the Eq-5d-3l in Patients with Depressive Disorders
Grochtdreis T, Brettschneider C, Hajek A, Schierz K, Hoyer J, König H
VALUE HEALTH. 2015;18(7):A707.

Complex coevolution of depression and health-related quality of life in old age
Hajek A, Brettschneider C, Ernst A, Lange C, Wiese B, Prokein J, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Bickel H, Mösch E, Heser K, Jessen F, Maier W, Scherer M, Riedel-Heller S, König H
QUAL LIFE RES. 2015;24(11):2713-2722.

Longitudinal Predictors of Institutionalization in Old Age
Hajek A, Brettschneider C, Lange C, Posselt T, Wiese B, Steinmann S, Weyerer S, Werle J, Pentzek M, Fuchs A, Stein J, Luck T, Bickel H, Mösch E, Wagner M, Jessen F, Maier W, Scherer M, Riedel-Heller S, König H
PLOS ONE. 2015;10(12):e0144203.

Prevalence and determinants of overweight and obesity in old age in Germany
Hajek A, Lehnert T, Ernst A, Lange C, Wiese B, Prokein J, Weyerer S, Werle J, Pentzek M, Fuchs A, Luck T, Bickel H, Mösch E, Heser K, Wagner M, Maier W, Scherer M, Riedel-Heller S, König H
BMC GERIATR. 2015;15:83.

Letzte Aktualisierung aus dem FIS: 23.11.2024 - 03:44 Uhr