Individual Study / JSTAR

Japanese Study of Aging and Retirement

Japanese Study of Aging and Retirement

JSTAR logo
Initiatives -

JSTAR project researchers aimed to construct a world-class longitudinal dataset on middle-aged and elderly Japanese persons to enable researchers worldwide to perform scientific investigation on aging and retirement from an international perspective.

This study aims to describe in detail how middle-aged and elderly Japanese live in terms of economic, social, health, and family status. In this project, the intention is to zoom in to paint a picture of the lives of individuals and zoom out to also provide a panorama view of society, while extracting scientific findings which we hope are innovative and insightful regarding life in Japan as well as other countries in the world. Moreover, it tries to connect these new scientific findings to efforts toward enhancing the effectiveness of policymaking.

Start Year
2007
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Members

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Investigators Contacts
  • Rieti
    Research Institute of Economy, Trade and Industry (RIETI)

Design

Study design
Population cohort
Follow Up
The participants are followed-up every 2 years

Marker Paper

JSTAR First Results 2009 Report. ICHIMURA Hidehiko, SHIMIZUTANI Satoshi, HASHIMOTO Hideki. September 2009 09-E-047.

Recruitment

Sources of Recruitment
  • Individuals
  • Other : Spouses

Number of participants

Number of participants
7,268
Number of participants with biosamples

Access

Availability of data and biosamples

Data
Biosamples
Other

Timeline

Populations

The individuals in the baseline sample of JSTAR are aged between 50 and 75 and live in five municipalities in the eastern area of Japan. The cities are Takikawa city in Hokkaido, Sendai city in the Tohoku area, Adachi ward which is a special city in the center of the Tokyo metropolis, Kanazawa city in the Hokuriku area and Shirakawa town in a mountainous town in the Chubu area.
Selection Criteria
Minimum age
50
Newborns
Twins
Countries
  • Japan
Territory
Adachi, Kanazawa, Shirakawa, Sendai, and Takikawa
Ethnic Origin
Health Status

Recruitment

Sources of recruitment
  • General population
General Population
  • Selected sample

Number of participants

Number of participants
Number of participants with biosamples
Two municipalities, Tosu and Naha, were added with ages between 50 and 75 in the baseline.
Selection Criteria
Minimum age
50
Newborns
Twins
Countries
  • Japan
Territory
Tosu and Naha
Ethnic Origin
Health Status

Recruitment

Sources of recruitment
  • General population
General Population
  • Selected sample

Number of participants

Number of participants
Number of participants with biosamples
Three municipalities, Chofu, Tondabayashi, and Hiroshima, were added with ages between 50 and 75 in the baseline
Selection Criteria
Minimum age
50
Newborns
Twins
Countries
  • Japan
Territory
Chofu, Tondabayashi, and Hiroshima
Ethnic Origin
Health Status

Recruitment

Sources of recruitment
  • General population
General Population
  • Selected sample

Number of participants

Number of participants
Number of participants with biosamples