| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
0.5%
|
| 1 | Yes, fully | 550 |
31.9%
|
| 2 | Yes, partially | 228 |
13.2%
|
| 3 | No | 939 |
54.4%
|