| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 818 |
26.3%
|
| 2 | Both | 126 |
4.1%
|
| 3 | Father only | 2130 |
68.6%
|
| 4 | Mother only | 14 |
0.5%
|
| 5 | I don't know | 18 |
0.6%
|
| Sysmiss | 4 |