| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 7401 |
88.5%
|
| 2 | Both | 65 |
0.8%
|
| 3 | Father only | 510 |
6.1%
|
| 4 | Mother only | 40 |
0.5%
|
| 5 | I don't know | 348 |
4.2%
|
| Sysmiss | 161 |