| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.8%
|
| 2 | 4 |
2.8%
|
|
| 3 | 12 |
8.3%
|
|
| 4 | 19 |
13.2%
|
|
| 5 | 14 |
9.7%
|
|
| 6 | 20 |
13.9%
|
|
| 7 | 26 |
18.1%
|
|
| 8 | 23 |
16%
|
|
| 9 | 10 |
6.9%
|
|
| 10 | Very effective | 12 |
8.3%
|
| 11 | Don't know | 60 | |
| Sysmiss | 34 |