| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.2%
|
| 2 | 7 |
5.6%
|
|
| 3 | 9 |
7.3%
|
|
| 4 | 6 |
4.8%
|
|
| 5 | 21 |
16.9%
|
|
| 6 | 19 |
15.3%
|
|
| 7 | 27 |
21.8%
|
|
| 8 | 17 |
13.7%
|
|
| 9 | 6 |
4.8%
|
|
| 10 | Very effective | 8 |
6.5%
|
| 11 | Don't know | 74 | |
| Sysmiss | 40 |