| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1908 |
80.5%
|
| 2 | Both | 31 |
1.3%
|
| 3 | Father only | 323 |
13.6%
|
| 4 | Mother only | 16 |
0.7%
|
| 5 | I don't know | 91 |
3.8%
|
| Sysmiss | 17 |