| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 48 |
42.1%
|
| 0 | 1 |
0.9%
|
|
| 2 | 3 |
2.6%
|
|
| 10 | 6 |
5.3%
|
|
| 12 | 1 |
0.9%
|
|
| 15 | 7 |
6.1%
|
|
| 20 | 11 |
9.6%
|
|
| 30 | 9 |
7.9%
|
|
| 35 | 2 |
1.8%
|
|
| 40 | 12 |
10.5%
|
|
| 45 | 1 |
0.9%
|
|
| 50 | 7 |
6.1%
|
|
| 55 | 1 |
0.9%
|
|
| 60 | 3 |
2.6%
|
|
| 65 | 1 |
0.9%
|
|
| 70 | 1 |
0.9%
|
|
| Sysmiss | 191 |