| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
1.5%
|
|
| 3 | 1 |
1.5%
|
|
| 4 | 1 |
1.5%
|
|
| 5 | 1 |
1.5%
|
|
| 6 | 6 |
9.2%
|
|
| 7 | 11 |
16.9%
|
|
| 8 | 10 |
15.4%
|
|
| 9 | 18 |
27.7%
|
|
| 10 | Very effective | 16 |
24.6%
|
| 11 | Don't know | 28 | |
| Sysmiss | 16 |