Japanese Aging and Health Dynamics Study (JAHEAD)
JAHEAD/NSJE is a nationally representative longitudinal study of Japanese adults aged 60 years and above. In 1987, the survey initially recruited participants aged 60 to 93 years using a stratified random sampling method. Since inception, supplemental samples of adults aged 60 to 65 years have been recruited. All participants are followed approximately every three to six years since recruitment, with the tenth survey taking place in 2021.
Study design
Cohort, Cohort - open
Number of participants at first data collection
3,288 (participants)
Age at first data collection
≥ 60 years (participants)
Participant year of birth
1893 - 1961 (participants)
Participant sex
All
Representative sample at baseline?
Japanese elderly.
Sample features
Country
Year of first data collection
1987
Primary Institutions
Tokyo Metropolitan Institute of Gerontology (東京都健康長寿医療センター, TMIG) (Research, Japan)
University of Michigan (Academic, United States of America)
Profile paper DOI
Funders
Department of Health and Human Services (HHS) (Government, United States of America)
National Institute on Aging (NIA) (Government, United States of America)
Tokyo Metropolitan Institute of Gerontology (Research council, Japan)
Ongoing?
Yes
Data types collected
- Interview – face-to-face
- Self-completed questionnaire – paper or computer assisted
- None
- None
- None
Engagement
Keywords
