| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 3 |
0.9%
|
|
| 4 | 16 |
5.1%
|
|
| 5 | 42 |
13.3%
|
|
| 6 | 41 |
13%
|
|
| 7 | 58 |
18.4%
|
|
| 8 | 62 |
19.6%
|
|
| 9 | 37 |
11.7%
|
|
| 10 | Very effective | 56 |
17.7%
|
| 11 | Don't know | 91 | |
| Sysmiss | 16 |