| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
5%
|
| 2 | 13 |
10.9%
|
|
| 3 | 13 |
10.9%
|
|
| 4 | 11 |
9.2%
|
|
| 5 | 18 |
15.1%
|
|
| 6 | 20 |
16.8%
|
|
| 7 | 15 |
12.6%
|
|
| 8 | 13 |
10.9%
|
|
| 9 | 7 |
5.9%
|
|
| 10 | Very effective | 3 |
2.5%
|
| 11 | NA | 3 | |
| 12 | Don't know | 82 | |
| Sysmiss | 34 |