| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
2.7%
|
|
| 3 | 2 |
2.7%
|
|
| 4 | 4 |
5.5%
|
|
| 5 | 5 |
6.8%
|
|
| 6 | 10 |
13.7%
|
|
| 7 | 12 |
16.4%
|
|
| 8 | 20 |
27.4%
|
|
| 9 | 12 |
16.4%
|
|
| 10 | Very effective | 6 |
8.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 65 |