| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.4%
|
| 2 | 7 |
4.7%
|
|
| 3 | 7 |
4.7%
|
|
| 4 | 15 |
10.1%
|
|
| 5 | 33 |
22.3%
|
|
| 6 | 34 |
23%
|
|
| 7 | 21 |
14.2%
|
|
| 8 | 11 |
7.4%
|
|
| 9 | 12 |
8.1%
|
|
| 10 | Very effective | 6 |
4.1%
|
| 11 | Don't know | 19 | |
| Sysmiss | 36 |