Composition of survey targets

The JPSC is a survey of women. There are five cohorts, depending on when they were selected. The age between each group is designed to be continuous, so that the younger group is extracted. Therefore, these populations can be distinguished as birth cohorts. You can find out which cohort each subject belongs to by the respondent’s ID.

  1. Cohort A

    • Respondents selected during the first survey in 1993

    • Women aged 24-34 (11 year range) at the time of the first survey (October 1, 1993)

    • Born October 2, 1958 to October 1, 1969

  2. Cohort B

    • Newly selected respondents during the 5th survey in 1997

    • Women aged 24-27 (4 year range) at the time of the first survey (October 1, 1997)

    • Born October 2, 1969 to October 1, 1973

  3. Cohort C

    • Newly selected respondents for the 11th survey in 2003

    • Women aged 24-29 (6 year range) at the time of the first survey (October 1, 2003)

    • Born October 2, 1973 to October 1, 1979

  4. Cohort D

    • Newly selected respondents for the 16th survey in 2008

    • Women aged 24-28 (5 year range) at the time of the first survey (October 1, 2008)

    • Born October 2, 1979 to October 1, 1984

  5. Cohort E

    • Newly selected respondents for the 21st survey in 2013

    • Women aged 24-28 (5 year range) at the time of the first survey (October 1, 2013)

    • Born October 2, 1984 to October 1, 1989

configuration drawing

JPSC cohorts