| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
0.5%
|
|
| 3 | 2 |
0.5%
|
|
| 4 | 15 |
4%
|
|
| 5 | 31 |
8.3%
|
|
| 6 | 71 |
19%
|
|
| 7 | 91 |
24.3%
|
|
| 8 | 76 |
20.3%
|
|
| 9 | 65 |
17.4%
|
|
| 10 | Very effective | 21 |
5.6%
|
| 11 | Don't know | 26 | |
| Sysmiss | 23 |