| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.3%
|
| 2 | 3 |
2%
|
|
| 3 | 9 |
6%
|
|
| 4 | 18 |
12.1%
|
|
| 5 | 28 |
18.8%
|
|
| 6 | 35 |
23.5%
|
|
| 7 | 19 |
12.8%
|
|
| 8 | 13 |
8.7%
|
|
| 9 | 16 |
10.7%
|
|
| 10 | Very effective | 6 |
4%
|
| 11 | Don't know | 18 | |
| Sysmiss | 36 |