| Value | Category |
|---|---|
| 00 | Month, year and day |
| 10 | Month and year |
| 20 | Month and age (year imputed) |
| 30 | Year and age |
| 31 | Year and age (month imputed) |
| 32 | Year and age (year ignored) |
| 40 | Year (age/month imputed) |
| 50 | Age (year/month imputed) |
| 60 | Month (age/year imputed) |
| 70 | None (all imputed) |
| 99 | NIU (not in universe) |
| var_concept.title | Vocabulary |
|---|---|
| Female biometrics, general Variables -- TOPICS | IPUMS |