| Value | Category | Cases | |
|---|---|---|---|
| 1 | Just after birth | 162 |
10.6%
|
| 2 | Later | 1327 |
87.1%
|
| 7 | Missing | 29 |
1.9%
|
| 9 | DK | 5 |
0.3%
|
| Sysmiss | 1181 |