| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 35 |
17.3%
|
| 2 | 17 |
8.4%
|
|
| 3 | 18 |
8.9%
|
|
| 4 | 17 |
8.4%
|
|
| 5 | 34 |
16.8%
|
|
| 6 | 25 |
12.4%
|
|
| 7 | 14 |
6.9%
|
|
| 8 | 11 |
5.4%
|
|
| 9 | 11 |
5.4%
|
|
| 10 | Very effective | 20 |
9.9%
|
| 11 | Don't know | 186 | |
| Sysmiss | 42 |