| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.2%
|
| 2 | 5 |
1.5%
|
|
| 3 | 10 |
3%
|
|
| 4 | 15 |
4.5%
|
|
| 5 | 39 |
11.7%
|
|
| 6 | 48 |
14.5%
|
|
| 7 | 54 |
16.3%
|
|
| 8 | 32 |
9.6%
|
|
| 9 | 29 |
8.7%
|
|
| 10 | Very effective | 40 |
12%
|
| 11 | Don't know | 56 |
16.9%
|
| Sysmiss | 22 |