| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
3.5%
|
| 2 | 15 |
3.8%
|
|
| 3 | 54 |
13.6%
|
|
| 4 | 75 |
18.9%
|
|
| 5 | 117 |
29.5%
|
|
| 6 | 65 |
16.4%
|
|
| 7 | 30 |
7.6%
|
|
| 8 | 11 |
2.8%
|
|
| 9 | 6 |
1.5%
|
|
| 10 | Very effective | 9 |
2.3%
|
| 11 | Don't know | 80 | |
| Sysmiss | 2 |