| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
3.9%
|
| 2 | 3 |
1.4%
|
|
| 3 | 10 |
4.8%
|
|
| 4 | 9 |
4.3%
|
|
| 5 | 21 |
10.1%
|
|
| 6 | 9 |
4.3%
|
|
| 7 | 23 |
11.1%
|
|
| 8 | 28 |
13.5%
|
|
| 9 | 13 |
6.3%
|
|
| 10 | Very effective | 10 |
4.8%
|
| 11 | Don't know | 73 |
35.3%
|
| Sysmiss | 18 |