| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.7%
|
| 2 | 1 |
0.7%
|
|
| 3 | 7 |
4.7%
|
|
| 4 | 6 |
4%
|
|
| 5 | 18 |
12%
|
|
| 6 | 28 |
18.7%
|
|
| 7 | 29 |
19.3%
|
|
| 8 | 38 |
25.3%
|
|
| 9 | 16 |
10.7%
|
|
| 10 | Very effective | 6 |
4%
|
| 11 | Don't know | 89 | |
| Sysmiss | 30 |