| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 2922 |
47.3%
|
| 2 | Both | 507 |
8.2%
|
| 3 | Father only | 2514 |
40.7%
|
| 4 | Mother only | 167 |
2.7%
|
| 5 | I don't know | 74 |
1.2%
|
| Sysmiss | 129 |