| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 2808 |
73.9%
|
| 2 | Both | 106 |
2.8%
|
| 3 | Father only | 791 |
20.8%
|
| 4 | Mother only | 32 |
0.8%
|
| 5 | I don't know | 61 |
1.6%
|
| Sysmiss | 31 |