| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 994 |
78.4%
|
| 2 | Both | 10 |
0.8%
|
| 3 | Father only | 242 |
19.1%
|
| 4 | Mother only | 2 |
0.2%
|
| 5 | I don't know | 20 |
1.6%
|
| Sysmiss | 16 |