| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
2.3%
|
| 2 | 17 |
3.9%
|
|
| 3 | 17 |
3.9%
|
|
| 4 | 21 |
4.8%
|
|
| 5 | 26 |
6%
|
|
| 6 | 23 |
5.3%
|
|
| 7 | 37 |
8.5%
|
|
| 8 | 28 |
6.4%
|
|
| 9 | 18 |
4.1%
|
|
| 10 | Very effective | 47 |
10.8%
|
| 11 | Don't know | 191 |
43.9%
|
| Sysmiss | 132 |