| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.8%
|
| 2 | 4 |
3.1%
|
|
| 3 | 10 |
7.6%
|
|
| 4 | 9 |
6.9%
|
|
| 5 | 21 |
16%
|
|
| 6 | 25 |
19.1%
|
|
| 7 | 24 |
18.3%
|
|
| 8 | 24 |
18.3%
|
|
| 9 | 6 |
4.6%
|
|
| 10 | Very effective | 3 |
2.3%
|
| 11 | NA | 5 | |
| 12 | Don't know | 71 | |
| Sysmiss | 31 |