| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 6538 |
41.9%
|
| 2 | Both | 331 |
2.1%
|
| 3 | Father only | 8411 |
54%
|
| 4 | Mother only | 75 |
0.5%
|
| 5 | I don't know | 232 |
1.5%
|
| Sysmiss | 23 |