| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2 |
0.1%
|
|
| 1 | Just after birth | 2037 |
86.3%
|
| 2 | Later | 309 |
13.1%
|
| 3 | 1 |
0%
|
|
| 6 | 5 |
0.2%
|
|
| 7 | Missing | 0 |
0%
|
| 9 | DK | 7 |
0.3%
|
| Sysmiss | 4905 |