| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
10.5%
|
| 0 | 3 |
15.8%
|
|
| 45 | 1 |
5.3%
|
|
| 60 | 1 |
5.3%
|
|
| 80 | 1 |
5.3%
|
|
| 90 | 1 |
5.3%
|
|
| 100 | 10 |
52.6%
|
|
| Sysmiss | 95 |