| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.9%
|
| 2 | 4 |
2.3%
|
|
| 3 | 8 |
4.7%
|
|
| 4 | 10 |
5.8%
|
|
| 5 | 22 |
12.9%
|
|
| 6 | 20 |
11.7%
|
|
| 7 | 23 |
13.5%
|
|
| 8 | 41 |
24%
|
|
| 9 | 13 |
7.6%
|
|
| 10 | Very effective | 25 |
14.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 108 |