| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 31 |
12.3%
|
| 2 | 19 |
7.5%
|
|
| 3 | 30 |
11.9%
|
|
| 4 | 19 |
7.5%
|
|
| 5 | 36 |
14.2%
|
|
| 6 | 30 |
11.9%
|
|
| 7 | 24 |
9.5%
|
|
| 8 | 16 |
6.3%
|
|
| 9 | 20 |
7.9%
|
|
| 10 | Very effective | 28 |
11.1%
|
| 11 | Don't know | 139 | |
| Sysmiss | 38 |