| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less harmful | 650 |
7.7%
|
| 2 | No different | 2516 |
30%
|
| 3 | More harmful | 4369 |
52%
|
| 7 | Don't know | 855 |
10.2%
|
| 9 | 8 |
0.1%
|