| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
4.7%
|
| 2 | 9 |
10.6%
|
|
| 3 | 2 |
2.4%
|
|
| 4 | 13 |
15.3%
|
|
| 5 | 10 |
11.8%
|
|
| 6 | 12 |
14.1%
|
|
| 8 | 22 |
25.9%
|
|
| 9 | 1 |
1.2%
|
|
| 10 | 3 |
3.5%
|
|
| 11 | 1 |
1.2%
|
|
| 12 | 4 |
4.7%
|
|
| 15 | 2 |
2.4%
|
|
| 16 | 1 |
1.2%
|
|
| 20 | 1 |
1.2%
|
|
| Sysmiss | 1640 |