Ohsaki National Health Insurance Cohort Study
The Ohsaki NHI Cohort Study follows over 52,000 National Health Insurance (NHI) beneficiaries who lived in the catchment area of Ohsaki Public Health Center, Miyagi Prefecture, Japan, from September to December of 1994. Participants were aged from 40 to 79 years at baseline and 47.8% were males. Among males, 39% were farmers, 28% were self-employed, and 28% were retired. For females, 31% were housewives, 25% farmers, and 15% self-employed. Since 1995, participants have been followed up at least until 2014.
Study design
Cohort
Number of participants at first data collection
52,029 (participants)
Age at first data collection
40 - 79 years (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
The population of the catchment area of Ohsaki Public Health Center, Miyagi Prefecture, Japan.
Sample features
Country
Year of first data collection
1995
Primary Institutions
Tohoku University (東北大学)
Profile paper DOI
Funders
Ministry of Health, Labor and Welfare (厚生労働省, MHLW)
Ongoing?
Yes
Data types collected
- Activity log (e.g. food, sleep, exercise)
- Secondary data
- Self-report questionnaire – paper or computer assisted
- None
- None
- Healthcare data
- Mortality data
Engagement
Keywords
Consortia and dataset groups
