| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3898 |
79.1%
|
| 2 | Both | 64 |
1.3%
|
| 3 | Father only | 659 |
13.4%
|
| 4 | Mother only | 37 |
0.8%
|
| 5 | I don't know | 272 |
5.5%
|
| Sysmiss | 18 |