| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2 | 7 |
50%
|
|
| 3 | 5 |
35.7%
|
|
| 4 | 1 |
7.1%
|
|
| 5 | 1 |
7.1%
|
|
| Sysmiss | 97 |