| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 33 |
9.2%
|
| 0 | 23 |
6.4%
|
|
| 1 | 113 |
31.4%
|
|
| 2 | 56 |
15.6%
|
|
| 3 | 27 |
7.5%
|
|
| 4 | 10 |
2.8%
|
|
| 5 | 49 |
13.6%
|
|
| 6 | 2 |
0.6%
|
|
| 7 | 4 |
1.1%
|
|
| 8 | 2 |
0.6%
|
|
| 10 | 20 |
5.6%
|
|
| 12 | 3 |
0.8%
|
|
| 15 | 5 |
1.4%
|
|
| 17 | 1 |
0.3%
|
|
| 18 | 1 |
0.3%
|
|
| 20 | 5 |
1.4%
|
|
| 30 | 3 |
0.8%
|
|
| 40 | 1 |
0.3%
|
|
| 60 | 1 |
0.3%
|
|
| 100 | 1 |
0.3%
|
|
| Sysmiss | 1635 |