| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 22 |
6.5%
|
| 2 | 28 |
8.3%
|
|
| 3 | 57 |
16.9%
|
|
| 4 | 44 |
13.1%
|
|
| 5 | 81 |
24%
|
|
| 6 | 53 |
15.7%
|
|
| 7 | 25 |
7.4%
|
|
| 8 | 15 |
4.5%
|
|
| 9 | 3 |
0.9%
|
|
| 10 | Very effective | 9 |
2.7%
|
| 11 | Don't know | 134 | |
| Sysmiss | 7 |