| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
19.8%
|
| 2 | 11 |
11.5%
|
|
| 3 | 16 |
16.7%
|
|
| 4 | 12 |
12.5%
|
|
| 5 | 12 |
12.5%
|
|
| 6 | 7 |
7.3%
|
|
| 7 | 1 |
1%
|
|
| 8 | 8 |
8.3%
|
|
| 10 | 2 |
2.1%
|
|
| 12 | 2 |
2.1%
|
|
| 15 | 3 |
3.1%
|
|
| 17 | 1 |
1%
|
|
| 18 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| Sysmiss | 502 |