| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
3.4%
|
| 2 | 24 |
5.8%
|
|
| 3 | 30 |
7.2%
|
|
| 4 | 38 |
9.2%
|
|
| 5 | 68 |
16.4%
|
|
| 6 | 77 |
18.6%
|
|
| 7 | 72 |
17.3%
|
|
| 8 | 57 |
13.7%
|
|
| 9 | 24 |
5.8%
|
|
| 10 | Very effective | 11 |
2.7%
|
| 11 | Don't know | 71 | |
| Sysmiss | 19 |