| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1734 |
47.4%
|
| 2 | Both | 164 |
4.5%
|
| 3 | Father only | 1589 |
43.5%
|
| 4 | Mother only | 53 |
1.4%
|
| 5 | I don't know | 116 |
3.2%
|
| Sysmiss | 13 |