| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.3%
|
| 2 | 2 |
1.3%
|
|
| 3 | 14 |
9.2%
|
|
| 4 | 12 |
7.8%
|
|
| 5 | 18 |
11.8%
|
|
| 6 | 25 |
16.3%
|
|
| 7 | 27 |
17.6%
|
|
| 8 | 28 |
18.3%
|
|
| 9 | 12 |
7.8%
|
|
| 10 | Very effective | 10 |
6.5%
|
| 11 | Don't know | 47 | |
| Sysmiss | 38 |