S24Q147 FIRST BIRTHCONTROL PILL-YEAR-W1

Variable Description

Name
H1CO14Y
Label
S24Q147 FIRST BIRTHCONTROL PILL-YEAR-W1
Dataset
wave1

Summary Statistics for 'H1CO14Y'

Value Valid Label Frequency % of Valid % of All
89 Valid 1989 and before 8
0.63%
0.04%
90 Valid 1990 24
1.89%
0.12%
91 Valid 1991 43
3.39%
0.21%
92 Valid 1992 97
7.64%
0.47%
93 Valid 1993 242
19.06%
1.17%
94 Valid 1994 461
36.30%
2.22%
95 Valid 1995 388
30.55%
1.87%
96 Valid 1996 7
0.55%
0.03%
97 Missing legitimate skip 19,443
93.72%
98 Missing don't know 32
0.15%
Total Responses Valid Invalid Min Max
20745 1270 19475 89 96

Representation

Representation Type
Code List
Selection Style
SelectOne
Measurement Unit
numeric
Measurement Unit
numeric
Aggregation Method
Unspecified
Temporal
False
Geographic
False

Source Questions

H1CO14Y

Lineage

  • Wave I In-Home Interview Data - H1CO14Y
    S24Q147 FIRST BIRTHCONTROL PILL-YEAR-W1
    • H1CO14Y
      14Y. [If respondent is female:] In what [month and] year did you first take birth control pills regularly for at least one monthly cycle?

Concordance

Add Health
Wave I Wave II
Wave I In-Home Interview Wave II In-Home Interview
Wave I In-Home Interview Data Wave II In-Home Interview
H1CO14Y H2CO17Y
1989 and before
0.63%
1990
1.89%
1991
3.39%
1992
7.64%
1993
19.06%
1994
36.30%
1995
30.55%
64.05%
1996
0.55%
35.95%
Add Health
Wave I Wave II
Wave I In-Home Interview Wave II In-Home Interview
Wave I In-Home Interview Data Wave II In-Home Interview
H1CO14Y H2CO17Y
1989 and before
0.04%
1990
0.12%
1991
0.21%
1992
0.47%
1993
1.17%
1994
2.22%
1995
1.87%
3.82%
1996
0.03%
2.14%
Dataset Variable Valid Invalid Min First Quartile Median Third Quartile Max Mean StdDev
Wave I In-Home Interview Data H1CO14Y 1,270 19,475 89 96
Wave II In-Home Interview H2CO17Y 879 13,859 95 96