| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 913 |
42.6%
|
| 2 | Both | 135 |
6.3%
|
| 3 | Father only | 1018 |
47.5%
|
| 4 | Mother only | 32 |
1.5%
|
| 5 | I don't know | 46 |
2.1%
|
| Sysmiss | 11 |