| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
3.2%
|
| 2 | 7 |
3.2%
|
|
| 3 | 14 |
6.4%
|
|
| 4 | 15 |
6.8%
|
|
| 5 | 30 |
13.7%
|
|
| 6 | 39 |
17.8%
|
|
| 7 | 41 |
18.7%
|
|
| 8 | 36 |
16.4%
|
|
| 9 | 22 |
10%
|
|
| 10 | Very effective | 8 |
3.7%
|
| 11 | Don't know | 156 | |
| Sysmiss | 46 |