| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
2%
|
| 0 | 133 |
29.4%
|
|
| 1 | 60 |
13.2%
|
|
| 2 | 61 |
13.5%
|
|
| 3 | 28 |
6.2%
|
|
| 4 | 49 |
10.8%
|
|
| 5 | 24 |
5.3%
|
|
| 6 | 11 |
2.4%
|
|
| 7 | 1 |
0.2%
|
|
| 8 | 35 |
7.7%
|
|
| 9 | 1 |
0.2%
|
|
| 10 | 18 |
4%
|
|
| 11 | 1 |
0.2%
|
|
| 12 | 18 |
4%
|
|
| 13 | 1 |
0.2%
|
|
| 24 | 2 |
0.4%
|
|
| 30 | 1 |
0.2%
|
|
| Sysmiss | 575 |