| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 4881 |
49.3%
|
| 2 | Both | 369 |
3.7%
|
| 3 | Father only | 4181 |
42.3%
|
| 4 | Mother only | 133 |
1.3%
|
| 5 | I don't know | 329 |
3.3%
|
| Sysmiss | 70 |