| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
6.7%
|
| 3 | 2 |
13.3%
|
|
| 5 | 3 |
20%
|
|
| 6 | 4 |
26.7%
|
|
| 8 | 1 |
6.7%
|
|
| 9 | 1 |
6.7%
|
|
| 12 | 1 |
6.7%
|
|
| 18 | 1 |
6.7%
|
|
| 40 | 1 |
6.7%
|
|
| Sysmiss | 99 |