| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 944 |
32.3%
|
| 2 | Both | 74 |
2.5%
|
| 3 | Father only | 1870 |
64%
|
| 4 | Mother only | 10 |
0.3%
|
| 5 | I don't know | 22 |
0.8%
|
| Sysmiss | 13 |