| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.9%
|
| 2 | 2 |
1.5%
|
|
| 3 | 7 |
5.1%
|
|
| 4 | 13 |
9.5%
|
|
| 5 | 10 |
7.3%
|
|
| 6 | 21 |
15.3%
|
|
| 7 | 26 |
19%
|
|
| 8 | 37 |
27%
|
|
| 9 | 9 |
6.6%
|
|
| 10 | Very effective | 8 |
5.8%
|
| 11 | Don't know | 105 | |
| Sysmiss | 27 |