| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.4%
|
| 2 | 10 |
3%
|
|
| 3 | 8 |
2.4%
|
|
| 4 | 15 |
4.5%
|
|
| 5 | 37 |
11.1%
|
|
| 6 | 47 |
14.1%
|
|
| 7 | 52 |
15.6%
|
|
| 8 | 34 |
10.2%
|
|
| 9 | 17 |
5.1%
|
|
| 10 | Very effective | 25 |
7.5%
|
| 11 | Don't know | 81 |
24.3%
|
| Sysmiss | 20 |