| Value | Category | Cases | |
|---|---|---|---|
| 1 | Hours after delivery | 136 |
2.4%
|
| 2 | Days after delivery | 3143 |
55.8%
|
| 3 | Weeks after delivery | 2275 |
40.4%
|
| 9 | Special answers | 78 |
1.4%
|
| Sysmiss | 3163 |