| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 1 | 1 |
1%
|
|
| 2 | 1 |
1%
|
|
| 5 | 19 |
19.8%
|
|
| 10 | 24 |
25%
|
|
| 15 | 3 |
3.1%
|
|
| 20 | 9 |
9.4%
|
|
| 25 | 6 |
6.3%
|
|
| 30 | 11 |
11.5%
|
|
| 35 | 1 |
1%
|
|
| 40 | 11 |
11.5%
|
|
| 45 | 2 |
2.1%
|
|
| 50 | 2 |
2.1%
|
|
| 60 | 3 |
3.1%
|
|
| 70 | 1 |
1%
|
|
| 75 | 1 |
1%
|
|
| Sysmiss | 66 |