| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 14 |
16.5%
|
| -8 | Refused | 0 |
0%
|
| 6 | 3 |
3.5%
|
|
| 7 | 1 |
1.2%
|
|
| 8 | 5 |
5.9%
|
|
| 10 | 7 |
8.2%
|
|
| 11 | 28 |
32.9%
|
|
| 12 | 23 |
27.1%
|
|
| 13 | 4 |
4.7%
|
|
| Sysmiss | 870 |