| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
4.9%
|
| 2 | 6 |
4.2%
|
|
| 3 | 9 |
6.3%
|
|
| 4 | 8 |
5.6%
|
|
| 5 | 27 |
18.9%
|
|
| 6 | 17 |
11.9%
|
|
| 7 | 29 |
20.3%
|
|
| 8 | 25 |
17.5%
|
|
| 9 | 13 |
9.1%
|
|
| 10 | Very effective | 2 |
1.4%
|
| 11 | Don't know | 94 | |
| Sysmiss | 52 |