| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
2.4%
|
| -7 | Does not apply (spontaneous) | 74 |
35.2%
|
| 0 | 14 |
6.7%
|
|
| 5 | 1 |
0.5%
|
|
| 10 | 1 |
0.5%
|
|
| 20 | 2 |
1%
|
|
| 25 | 2 |
1%
|
|
| 40 | 2 |
1%
|
|
| 70 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| 90 | 1 |
0.5%
|
|
| 100 | 106 |
50.5%
|
|
| Sysmiss | 148 |