| Value | Category |
|---|---|
| 9 | NIU (not in universe) |
| 0 | No flag |
| 1 | Greater than interval between birth and succeeding birth |
| 2 | Greater than interval between birth and date of interview by only 1 month |
| 4 | During pregnancy in calendar |
| 8 | Missing |
| var_concept.title | Vocabulary |
|---|---|
| Child health postpartum Variables -- TOPICS | IPUMS |