| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
4.2%
|
| 0 | 4 |
4.2%
|
|
| 6 | 1 |
1.1%
|
|
| 10 | 3 |
3.2%
|
|
| 15 | 1 |
1.1%
|
|
| 20 | 8 |
8.4%
|
|
| 25 | 55 |
57.9%
|
|
| 30 | 5 |
5.3%
|
|
| 35 | 1 |
1.1%
|
|
| 40 | 3 |
3.2%
|
|
| 50 | 4 |
4.2%
|
|
| 65 | 1 |
1.1%
|
|
| 70 | 2 |
2.1%
|
|
| 85 | 1 |
1.1%
|
|
| 90 | 1 |
1.1%
|
|
| 100 | 1 |
1.1%
|
|
| Sysmiss | 293 |