| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 |
2.6%
|
| 2 | 30 |
6.5%
|
|
| 3 | 32 |
6.9%
|
|
| 4 | 45 |
9.7%
|
|
| 5 | 71 |
15.4%
|
|
| 6 | 89 |
19.3%
|
|
| 7 | 70 |
15.2%
|
|
| 8 | 61 |
13.2%
|
|
| 9 | 38 |
8.2%
|
|
| 10 | Very effective | 14 |
3%
|
| 11 | Don't know | 30 | |
| Sysmiss | 13 |