| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3421 |
77.9%
|
| 2 | Both | 91 |
2.1%
|
| 3 | Father only | 715 |
16.3%
|
| 4 | Mother only | 39 |
0.9%
|
| 5 | I don't know | 128 |
2.9%
|
| Sysmiss | 53 |