| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.1%
|
| 2 | 6 |
2.3%
|
|
| 3 | 14 |
5.3%
|
|
| 4 | 15 |
5.6%
|
|
| 5 | 31 |
11.7%
|
|
| 6 | 39 |
14.7%
|
|
| 7 | 47 |
17.7%
|
|
| 8 | 37 |
13.9%
|
|
| 9 | 22 |
8.3%
|
|
| 10 | Very effective | 24 |
9%
|
| 11 | Don't know | 28 |
10.5%
|
| Sysmiss | 5 |