| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 18 |
3.9%
|
| 2 | 15 |
3.3%
|
|
| 3 | 26 |
5.6%
|
|
| 4 | 27 |
5.9%
|
|
| 5 | 49 |
10.6%
|
|
| 6 | 39 |
8.5%
|
|
| 7 | 33 |
7.2%
|
|
| 8 | 33 |
7.2%
|
|
| 9 | 14 |
3%
|
|
| 10 | Very effective | 34 |
7.4%
|
| 11 | Don't know | 25 |
5.4%
|
| 12 | 148 |
32.1%
|
|
| Sysmiss | 106 |