November 2025 monthly data are now available via IPUMS CPS. Note that October data were not collected during the U.S. federal government shutdown.
- Codes
- Description
- Comparability
- Universe
- Availability
- Flags
- Questionnaire Text
- UnHarmonized Variables
Codes
This is a 4 digit numeric variable.
9999 = N.I.U. (Not in Universe).
Description
FRBIRTHY4 gives the birth year of the woman's fourth child. This variable is a part of the CPS Fertility Supplement.
Universe
- Jun 1980: Women age 15-75 with at least four live births.
- Jun 1990 and Jun 1995: Women age 15-65 with at least four live births.
Availability
| Years | Jan | Feb | ASEC | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1980 | - | - | - | - | - | X | - | - | - | - | - | - |
| 1990 | - | - | - | - | - | X | - | - | - | - | - | - |
| 1995 | - | - | - | - | - | X | - | - | - | - | - | - |
