| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
3.4%
|
| 2 | 7 |
3.4%
|
|
| 3 | 12 |
5.8%
|
|
| 4 | 23 |
11.2%
|
|
| 5 | 24 |
11.7%
|
|
| 6 | 23 |
11.2%
|
|
| 7 | 17 |
8.3%
|
|
| 8 | 28 |
13.6%
|
|
| 9 | 27 |
13.1%
|
|
| 10 | Very effective | 38 |
18.4%
|
| 11 | Don't know | 70 | |
| Sysmiss | 43 |