| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
2.6%
|
| 2 | 6 |
1.1%
|
|
| 3 | 18 |
3.4%
|
|
| 4 | 33 |
6.2%
|
|
| 5 | 72 |
13.4%
|
|
| 6 | 102 |
19%
|
|
| 7 | 101 |
18.8%
|
|
| 8 | 84 |
15.7%
|
|
| 9 | 46 |
8.6%
|
|
| 10 | Very effective | 60 |
11.2%
|
| 11 | Don't know | 117 | |
| Sysmiss | 66 |