| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 2 |
2.5%
|
|
| 4 | 2 |
2.5%
|
|
| 5 | 8 |
10%
|
|
| 6 | 18 |
22.5%
|
|
| 7 | 19 |
23.8%
|
|
| 8 | 20 |
25%
|
|
| 9 | 7 |
8.8%
|
|
| 10 | Very effective | 4 |
5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 67 |