| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 30 | 1 |
5%
|
|
| 60 | 2 |
10%
|
|
| 80 | 1 |
5%
|
|
| 85 | 1 |
5%
|
|
| 90 | 1 |
5%
|
|
| 100 | 14 |
70%
|
|
| Sysmiss | 91 |