| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1594 |
88.1%
|
| 2 | Both | 25 |
1.4%
|
| 3 | Father only | 138 |
7.6%
|
| 4 | Mother only | 8 |
0.4%
|
| 5 | I don't know | 44 |
2.4%
|
| Sysmiss | 11 |