| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
7.5%
|
| 0 | 43 |
32.3%
|
|
| 1 | 22 |
16.5%
|
|
| 2 | 12 |
9%
|
|
| 3 | 8 |
6%
|
|
| 4 | 5 |
3.8%
|
|
| 5 | 8 |
6%
|
|
| 6 | 4 |
3%
|
|
| 7 | 1 |
0.8%
|
|
| 8 | 2 |
1.5%
|
|
| 9 | 3 |
2.3%
|
|
| 10 | 1 |
0.8%
|
|
| 12 | 4 |
3%
|
|
| 15 | 1 |
0.8%
|
|
| 18 | 1 |
0.8%
|
|
| 20 | 3 |
2.3%
|
|
| 30 | 2 |
1.5%
|
|
| 40 | 2 |
1.5%
|
|
| 50 | 1 |
0.8%
|
|
| Sysmiss | 231 |