| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.7%
|
| 2 | 8 |
5.3%
|
|
| 3 | 15 |
10%
|
|
| 4 | 31 |
20.7%
|
|
| 5 | 25 |
16.7%
|
|
| 6 | 22 |
14.7%
|
|
| 7 | 23 |
15.3%
|
|
| 8 | 16 |
10.7%
|
|
| 9 | 3 |
2%
|
|
| 10 | Very effective | 3 |
2%
|
| 11 | Don't know | 43 | |
| Sysmiss | 5 |