| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.8%
|
| 2 | 9 |
6.8%
|
|
| 3 | 7 |
5.3%
|
|
| 4 | 17 |
12.9%
|
|
| 5 | 18 |
13.6%
|
|
| 6 | 26 |
19.7%
|
|
| 7 | 14 |
10.6%
|
|
| 8 | 20 |
15.2%
|
|
| 9 | 9 |
6.8%
|
|
| 10 | Very effective | 7 |
5.3%
|
| 11 | Don't know | 70 | |
| Sysmiss | 36 |