| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
6.2%
|
| 0 | 68 |
42.2%
|
|
| 1 | 1 |
0.6%
|
|
| 3 | 1 |
0.6%
|
|
| 5 | 3 |
1.9%
|
|
| 6 | 1 |
0.6%
|
|
| 10 | 11 |
6.8%
|
|
| 15 | 9 |
5.6%
|
|
| 20 | 11 |
6.8%
|
|
| 25 | 1 |
0.6%
|
|
| 30 | 40 |
24.8%
|
|
| 35 | 1 |
0.6%
|
|
| 40 | 1 |
0.6%
|
|
| 45 | 2 |
1.2%
|
|
| 50 | 1 |
0.6%
|
|
| Sysmiss | 611 |