| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 297 |
82.3%
|
|
| 1 | 45 |
12.5%
|
|
| 2 | 11 |
3%
|
|
| 3 | 7 |
1.9%
|
|
| 9 | 1 |
0.3%
|