| Value | Category | Cases | |
|---|---|---|---|
| -3 | Not applicable; Father unknown | 1 |
0%
|
| -2 | No answer | 10 |
0.5%
|
| -1 | Don't know | 174 |
8.6%
|
| 1 | Lower | 1106 |
55%
|
| 2 | Middle | 463 |
23%
|
| 3 | Higher | 258 |
12.8%
|