| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 50 |
42%
|
| 0 | 21 |
17.6%
|
|
| 1 | 17 |
14.3%
|
|
| 2 | 2 |
1.7%
|
|
| 5 | 7 |
5.9%
|
|
| 7 | 1 |
0.8%
|
|
| 10 | 8 |
6.7%
|
|
| 15 | 5 |
4.2%
|
|
| 20 | 3 |
2.5%
|
|
| 25 | 1 |
0.8%
|
|
| 30 | 1 |
0.8%
|
|
| 45 | 1 |
0.8%
|
|
| 50 | 1 |
0.8%
|
|
| 100 | 1 |
0.8%
|
|
| Sysmiss | 1250 |