| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3495 |
54.3%
|
| 2 | Both | 478 |
7.4%
|
| 3 | Father only | 2208 |
34.3%
|
| 4 | Mother only | 112 |
1.7%
|
| 5 | I don't know | 139 |
2.2%
|
| Sysmiss | 70 |