| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1650 |
88.5%
|
| 2 | Both | 38 |
2%
|
| 3 | Father only | 133 |
7.1%
|
| 4 | Mother only | 12 |
0.6%
|
| 5 | I don't know | 31 |
1.7%
|
| Sysmiss | 16 |