| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.3%
|
| 3 | 1 |
0.8%
|
|
| 4 | 6 |
4.5%
|
|
| 5 | 19 |
14.3%
|
|
| 6 | 21 |
15.8%
|
|
| 7 | 31 |
23.3%
|
|
| 8 | 35 |
26.3%
|
|
| 9 | 10 |
7.5%
|
|
| 10 | Very effective | 7 |
5.3%
|
| 11 | Don't know | 107 | |
| Sysmiss | 29 |