| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1621 |
64.1%
|
| 2 | Both | 43 |
1.7%
|
| 3 | Father only | 821 |
32.5%
|
| 4 | Mother only | 5 |
0.2%
|
| 5 | I don't know | 37 |
1.5%
|
| Sysmiss | 20 |