| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 4 |
1.1%
|
|
| 4 | 7 |
1.9%
|
|
| 5 | 44 |
11.6%
|
|
| 6 | 98 |
25.9%
|
|
| 7 | 89 |
23.5%
|
|
| 8 | 72 |
19%
|
|
| 9 | 43 |
11.4%
|
|
| 10 | Very effective | 20 |
5.3%
|
| 11 | Don't know | 30 | |
| Sysmiss | 15 |