| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1581 |
71.8%
|
| 2 | Both | 87 |
4%
|
| 3 | Father only | 373 |
16.9%
|
| 4 | Mother only | 16 |
0.7%
|
| 5 | I don't know | 145 |
6.6%
|
| Sysmiss | 18 |