| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.2%
|
| 2 | 1 |
0.6%
|
|
| 3 | 6 |
3.6%
|
|
| 4 | 5 |
3%
|
|
| 5 | 30 |
18.1%
|
|
| 6 | 18 |
10.8%
|
|
| 7 | 35 |
21.1%
|
|
| 8 | 41 |
24.7%
|
|
| 9 | 18 |
10.8%
|
|
| 10 | Very effective | 10 |
6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 34 |