| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 1800 |
83.7%
|
| 2 | Both | 20 |
0.9%
|
| 3 | Father only | 266 |
12.4%
|
| 4 | Mother only | 8 |
0.4%
|
| 5 | I don't know | 57 |
2.6%
|
| Sysmiss | 4 |