| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
5.1%
|
| 2 | 6 |
3.4%
|
|
| 3 | 12 |
6.9%
|
|
| 4 | 22 |
12.6%
|
|
| 5 | 25 |
14.3%
|
|
| 6 | 25 |
14.3%
|
|
| 7 | 25 |
14.3%
|
|
| 8 | 27 |
15.4%
|
|
| 9 | 15 |
8.6%
|
|
| 10 | Very effective | 9 |
5.1%
|
| 11 | Don't know | 48 | |
| Sysmiss | 39 |