| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
1.7%
|
|
| 4 | 3 |
5.1%
|
|
| 5 | 14 |
23.7%
|
|
| 6 | 8 |
13.6%
|
|
| 7 | 10 |
16.9%
|
|
| 8 | 18 |
30.5%
|
|
| 9 | 4 |
6.8%
|
|
| 10 | Very effective | 1 |
1.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 55 |