Survey respondent’s number (ID)

Variable name

ID

Description

This number also allows us to distinguish the survey times and birth cohorts ( ref ) in which the respondent participated in the survey.

ID: 1 to 1500

  • Sample selected in the first survey (1993) (Cohort A)

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

  • Born October 2, 1958 to October 1, 1969

  • Initial target number: 1,500 people

ID: 2001-2500

  • Sample selected in the 5th survey (1997) (Cohort B)

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

  • Born October 2, 1969 to October 1, 1973

  • Initial target number: 500 people

ID: 3001-3838

  • Sample selected in the 11th survey (2003) (Cohort C)

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

  • Born October 2, 1973 to October 1, 1979

  • Number of initial targets: 836

  • IDs 3178 and 3403 are missing

ID: 4001-4645

  • Sample selected in the 16th survey (2008) (Cohort D)

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

  • Born October 2, 1979 to October 1, 1984

  • Number of initial targets: 636

  • The nine IDs 4342, 4343, 4401, 4407, 4435, 4447, 4448, 4515, and 4644 are missing

ID:5001-5648

  • Sample selected for the 21st survey (2013) (Cohort E)

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

  • Born October 2, 1984 to October 1, 1989

  • Number of initial targets: 648