| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.1%
|
| 2 | 3 |
1%
|
|
| 3 | 6 |
2.1%
|
|
| 4 | 8 |
2.8%
|
|
| 5 | 11 |
3.8%
|
|
| 6 | 21 |
7.3%
|
|
| 7 | 36 |
12.5%
|
|
| 8 | 38 |
13.2%
|
|
| 9 | 46 |
16%
|
|
| 10 | Very effective | 33 |
11.5%
|
| 11 | Don't know | 79 |
27.5%
|
| Sysmiss | 151 |