| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 16 |
6.9%
|
| -7 | Does not apply (spontaneous) | 52 |
22.3%
|
| 0 | 61 |
26.2%
|
|
| 10 | 2 |
0.9%
|
|
| 20 | 2 |
0.9%
|
|
| 25 | 1 |
0.4%
|
|
| 27 | 1 |
0.4%
|
|
| 30 | 3 |
1.3%
|
|
| 45 | 1 |
0.4%
|
|
| 50 | 6 |
2.6%
|
|
| 60 | 1 |
0.4%
|
|
| 70 | 1 |
0.4%
|
|
| 75 | 1 |
0.4%
|
|
| 80 | 2 |
0.9%
|
|
| 90 | 1 |
0.4%
|
|
| 100 | 82 |
35.2%
|
|
| Sysmiss | 126 |