| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 4466 |
87.6%
|
| 2 | Both | 112 |
2.2%
|
| 3 | Father only | 334 |
6.5%
|
| 4 | Mother only | 28 |
0.5%
|
| 5 | I don't know | 160 |
3.1%
|
| Sysmiss | 35 |