| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
5.5%
|
| 2 | 1 |
1.8%
|
|
| 4 | 4 |
7.3%
|
|
| 5 | 4 |
7.3%
|
|
| 6 | 4 |
7.3%
|
|
| 7 | 7 |
12.7%
|
|
| 8 | 14 |
25.5%
|
|
| 9 | 8 |
14.5%
|
|
| 10 | Very effective | 10 |
18.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 54 |