| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Yes, fully | 35 |
16.7%
|
| 2 | Yes, partially | 11 |
5.3%
|
| 3 | No | 163 |
78%
|
| Sysmiss | 302 |