| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
16%
|
| 0 | 30 |
25.2%
|
|
| 1 | 14 |
11.8%
|
|
| 2 | 14 |
11.8%
|
|
| 3 | 5 |
4.2%
|
|
| 4 | 2 |
1.7%
|
|
| 5 | 7 |
5.9%
|
|
| 6 | 3 |
2.5%
|
|
| 7 | 1 |
0.8%
|
|
| 8 | 5 |
4.2%
|
|
| 9 | 2 |
1.7%
|
|
| 10 | 3 |
2.5%
|
|
| 15 | 2 |
1.7%
|
|
| 18 | 3 |
2.5%
|
|
| 20 | 2 |
1.7%
|
|
| 22 | 1 |
0.8%
|
|
| 24 | 1 |
0.8%
|
|
| 32 | 1 |
0.8%
|
|
| 35 | 1 |
0.8%
|
|
| 50 | 2 |
1.7%
|
|
| 55 | 1 |
0.8%
|
|
| Sysmiss | 283 |