| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
4.2%
|
| -7 | Does not apply | 82 |
19.1%
|
| 0 | No impact | 202 |
47.1%
|
| 1 | Minor impact | 67 |
15.6%
|
| 2 | Moderate impact | 53 |
12.4%
|
| 3 | Major impact | 6 |
1.4%
|
| 4 | Very major impact | 1 |
0.2%
|