| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 21 |
4.9%
|
| 2 | 19 |
4.4%
|
|
| 3 | 42 |
9.8%
|
|
| 4 | 55 |
12.9%
|
|
| 5 | 123 |
28.8%
|
|
| 6 | 82 |
19.2%
|
|
| 7 | 56 |
13.1%
|
|
| 8 | 16 |
3.7%
|
|
| 9 | 6 |
1.4%
|
|
| 10 | Very effective | 7 |
1.6%
|
| 11 | Don't know | 48 | |
| Sysmiss | 3 |