| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1132 |
39.4%
|
| 2 | Both | 42 |
1.5%
|
| 3 | Father only | 1677 |
58.3%
|
| 4 | Mother only | 3 |
0.1%
|
| 5 | I don't know | 22 |
0.8%
|
| Sysmiss | 6 |