| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
5.6%
|
| 2 | 7 |
4.9%
|
|
| 3 | 5 |
3.5%
|
|
| 4 | 8 |
5.6%
|
|
| 5 | 16 |
11.1%
|
|
| 6 | 26 |
18.1%
|
|
| 7 | 26 |
18.1%
|
|
| 8 | 25 |
17.4%
|
|
| 9 | 15 |
10.4%
|
|
| 10 | Very effective | 8 |
5.6%
|
| 11 | NA | 4 | |
| 12 | Don't know | 55 | |
| Sysmiss | 35 |