IFSS_ADEXP5YR: Additional children expected in next five years

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Summary for Variable Group: Birth desires and intentions

This variable group describes the respondent's intended and expected number of additional children, how sure she is of the intended number, when she expects to have her next child, and whether she and her husband want to have additional children. It also includes information on the ideal number of children for the respondent personally as well as for the average American family. Retrospective reports of whether past pregnancies were intended are located in the pregnancy interval file.


Additional children expected in next five years


1982 NSFG
1976 NSFG: Couple File
1960 GAF

Source Variables

Source Questions

D28_35 D-28/D-35 1982 NSFG
ADEXP5YR D-39 1976 NSFG: Couple File
EXP_MIN5YR 27a 1960 GAF
EXP_MAX5YR 27a 1960 GAF


This variable reports the number of children the respondent expects to have in the next five years.

General Comparability Notes

Summary: This variable is largely comparable across three surveys, but there are some differences in question wording and respondent universe.

In the 1982 NSFG and the 1960 GAF, respondents were asked directly how many children they expected in the next five years. In the 1976 NSFG, respondents were first asked about the total number of children they expected to have in the future. Respondents were then asked, "If you do have [reported number] more babies, how many of those do you expect to have in the next five years?"

Respondents reported a single answer in 1982 and 1976. In 1960, the question specified a minimum and maximum number of children. The harmonized variable reports the midpoint of this range.

In the 1982 survey, the question about expected children in the next five years was not asked of respondents who were sterile, who had been advised by a doctor not to get pregnant, who would terminate any future pregnancies for medical reasons, who did not intend to have any more children, or who did not know how many children they intended to have. In 1976, the variable was recoded to apply to all respondents. In 1960, it applies only to women who plan to take six or more years to complete their fertility.

See also:

Imputation Flag Exists

Imputation Flag Values
-1 Illogical value
0 Not imputed
1 Imputed in original study
2 Logically imputed
3 Month imputed (Original file edit)
4 Age known, month imputed
5 Originally imputed as June, recoded to random month
6 Month imputed
7 Multiple regression imputed: Not ascertained
8 Multiple regression imputed: Refused
9 Multiple regression imputed: Don't know
10 Midpoint of a given range
11 Answer comes from a follow-up question
12 Midpoint of a range given as a follow-up
13 Answer is rounded up
14 Answer is rounded down
15 Reported months and weeks, weeks<=4
16 Reported months=trunc(weeks/4.35)
17 Reported months=weeks & weeks>4
18 Reported months!=trunc(weeks/4.35), months!=weeks, weeks>4
19 Months coded NA/RF/DK
20 Weeks coded NA/RF/DK
21 Impossible to determine which method used last

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