| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 27 |
4.7%
|
| 0 | 167 |
29.2%
|
|
| 1 | 76 |
13.3%
|
|
| 2 | 77 |
13.5%
|
|
| 3 | 64 |
11.2%
|
|
| 4 | 7 |
1.2%
|
|
| 5 | 89 |
15.6%
|
|
| 6 | 5 |
0.9%
|
|
| 7 | 5 |
0.9%
|
|
| 8 | 3 |
0.5%
|
|
| 9 | 2 |
0.4%
|
|
| 10 | 19 |
3.3%
|
|
| 13 | 2 |
0.4%
|
|
| 15 | 5 |
0.9%
|
|
| 20 | 23 |
4%
|
|
| Sysmiss | 51 |