| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 20 |
7.8%
|
| 2 | 21 |
8.2%
|
|
| 3 | 20 |
7.8%
|
|
| 4 | 35 |
13.7%
|
|
| 5 | 22 |
8.6%
|
|
| 6 | 19 |
7.5%
|
|
| 7 | 19 |
7.5%
|
|
| 8 | 12 |
4.7%
|
|
| 9 | 4 |
1.6%
|
|
| 10 | Very effective | 13 |
5.1%
|
| 11 | Don't know | 70 |
27.5%
|
| Sysmiss | 50 |