| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1607 |
46.7%
|
| 2 | Both | 47 |
1.4%
|
| 3 | Father only | 1689 |
49.1%
|
| 4 | Mother only | 16 |
0.5%
|
| 5 | I don't know | 81 |
2.4%
|
| Sysmiss | 3 |