| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
3%
|
| 2 | 2 |
0.9%
|
|
| 3 | 9 |
3.9%
|
|
| 4 | 12 |
5.2%
|
|
| 5 | 17 |
7.4%
|
|
| 6 | 17 |
7.4%
|
|
| 7 | 32 |
13.9%
|
|
| 8 | 47 |
20.3%
|
|
| 9 | 32 |
13.9%
|
|
| 10 | Very effective | 19 |
8.2%
|
| 11 | Don't know | 37 |
16%
|
| Sysmiss | 17 |