| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 73 |
12.1%
|
| 1 | 0 | 44 |
7.3%
|
| 2 | 1-5 | 272 |
45.3%
|
| 3 | >5 | 212 |
35.3%
|