| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.6%
|
| 2 | 4 |
4.8%
|
|
| 3 | 3 |
3.6%
|
|
| 4 | 6 |
7.1%
|
|
| 5 | 11 |
13.1%
|
|
| 6 | 8 |
9.5%
|
|
| 7 | 12 |
14.3%
|
|
| 8 | 16 |
19%
|
|
| 9 | 13 |
15.5%
|
|
| 10 | Very effective | 8 |
9.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 82 |