| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 4 |
1.9%
|
|
| 3 | 5 |
2.4%
|
|
| 4 | 11 |
5.2%
|
|
| 5 | 22 |
10.4%
|
|
| 6 | 28 |
13.3%
|
|
| 7 | 60 |
28.4%
|
|
| 8 | 52 |
24.6%
|
|
| 9 | 25 |
11.8%
|
|
| 10 | Very effective | 4 |
1.9%
|
| 11 | Don't know | 134 | |
| Sysmiss | 15 |