| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1%
|
| 2 | 13 |
2.7%
|
|
| 3 | 21 |
4.4%
|
|
| 4 | 33 |
6.8%
|
|
| 5 | 54 |
11.2%
|
|
| 6 | 71 |
14.7%
|
|
| 7 | 93 |
19.3%
|
|
| 8 | 89 |
18.5%
|
|
| 9 | 57 |
11.8%
|
|
| 10 | Very effective | 46 |
9.5%
|
| 11 | Don't know | 20 | |
| Sysmiss | 3 |