| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 20 | 2 |
25%
|
|
| 22 | 1 |
12.5%
|
|
| 24 | 1 |
12.5%
|
|
| 50 | 1 |
12.5%
|
|
| 74 | 1 |
12.5%
|
|
| 94 | 1 |
12.5%
|
|
| 172 | 1 |
12.5%
|
|
| Sysmiss | 201 |