| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
4.6%
|
|
| 3 | 1 |
1.5%
|
|
| 4 | 1 |
1.5%
|
|
| 5 | 3 |
4.6%
|
|
| 6 | 5 |
7.7%
|
|
| 7 | 12 |
18.5%
|
|
| 8 | 20 |
30.8%
|
|
| 9 | 13 |
20%
|
|
| 10 | Very effective | 7 |
10.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 99 |