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