| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.7%
|
| 2 | 7 |
5.8%
|
|
| 3 | 10 |
8.3%
|
|
| 4 | 14 |
11.7%
|
|
| 5 | 22 |
18.3%
|
|
| 6 | 20 |
16.7%
|
|
| 7 | 13 |
10.8%
|
|
| 8 | 17 |
14.2%
|
|
| 9 | 7 |
5.8%
|
|
| 10 | Very effective | 8 |
6.7%
|
| 11 | Don't know | 83 | |
| Sysmiss | 35 |