| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 3 |
1.2%
|
|
| 4 | 4 |
1.6%
|
|
| 5 | 16 |
6.3%
|
|
| 6 | 30 |
11.9%
|
|
| 7 | 62 |
24.5%
|
|
| 8 | 82 |
32.4%
|
|
| 9 | 49 |
19.4%
|
|
| 10 | Very effective | 7 |
2.8%
|
| 11 | Don't know | 90 | |
| Sysmiss | 17 |