| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1099 |
79.4%
|
| 2 | Both | 63 |
4.5%
|
| 3 | Father only | 168 |
12.1%
|
| 4 | Mother only | 6 |
0.4%
|
| 5 | I don't know | 49 |
3.5%
|
| Sysmiss | 5 |