| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.8%
|
| 2 | 3 |
1.1%
|
|
| 3 | 3 |
1.1%
|
|
| 4 | 6 |
2.2%
|
|
| 5 | 13 |
4.7%
|
|
| 6 | 22 |
8%
|
|
| 7 | 56 |
20.4%
|
|
| 8 | 73 |
26.5%
|
|
| 9 | 55 |
20%
|
|
| 10 | Very effective | 39 |
14.2%
|
| 11 | Don't know | 97 | |
| Sysmiss | 49 |