| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
3.3%
|
| 0 | 36 |
40%
|
|
| 10 | 14 |
15.6%
|
|
| 15 | 1 |
1.1%
|
|
| 20 | 12 |
13.3%
|
|
| 22 | 1 |
1.1%
|
|
| 30 | 9 |
10%
|
|
| 35 | 2 |
2.2%
|
|
| 40 | 2 |
2.2%
|
|
| 45 | 1 |
1.1%
|
|
| 50 | 3 |
3.3%
|
|
| 55 | 2 |
2.2%
|
|
| 60 | 1 |
1.1%
|
|
| 65 | 1 |
1.1%
|
|
| 70 | 1 |
1.1%
|
|
| 100 | 1 |
1.1%
|
|
| Sysmiss | 670 |