| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
7.4%
|
| 2 | 1 |
1.2%
|
|
| 3 | 6 |
7.4%
|
|
| 4 | 12 |
14.8%
|
|
| 5 | 20 |
24.7%
|
|
| 6 | 12 |
14.8%
|
|
| 7 | 13 |
16%
|
|
| 8 | 8 |
9.9%
|
|
| 9 | 2 |
2.5%
|
|
| 10 | Very effective | 1 |
1.2%
|
| 11 | Don't know | 108 | |
| Sysmiss | 33 |