| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.1%
|
| 2 | 3 |
1.7%
|
|
| 3 | 10 |
5.7%
|
|
| 4 | 10 |
5.7%
|
|
| 5 | 17 |
9.7%
|
|
| 6 | 27 |
15.4%
|
|
| 7 | 29 |
16.6%
|
|
| 8 | 43 |
24.6%
|
|
| 9 | 23 |
13.1%
|
|
| 10 | Very effective | 11 |
6.3%
|
| 11 | Don't know | 70 | |
| Sysmiss | 24 |