| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 |
14.5%
|
| 2 | 4 |
5.3%
|
|
| 3 | 4 |
5.3%
|
|
| 4 | 6 |
7.9%
|
|
| 5 | 6 |
7.9%
|
|
| 6 | 6 |
7.9%
|
|
| 7 | 10 |
13.2%
|
|
| 8 | 5 |
6.6%
|
|
| 9 | 8 |
10.5%
|
|
| 10 | Very effective | 16 |
21.1%
|
| 11 | N/A | 5 | |
| 12 | Don't know | 76 | |
| Sysmiss | 23 |