| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 2551 |
43.2%
|
| 2 | Both | 158 |
2.7%
|
| 3 | Father only | 3073 |
52%
|
| 4 | Mother only | 56 |
0.9%
|
| 5 | I don't know | 72 |
1.2%
|
| Sysmiss | 30 |