| Value | Category | Cases | |
|---|---|---|---|
| -99 | 11 |
2.8%
|
|
| 1 | Not effective at all | 9 |
2.3%
|
| 2 | 11 |
2.8%
|
|
| 3 | 12 |
3%
|
|
| 4 | 23 |
5.8%
|
|
| 5 | 30 |
7.5%
|
|
| 6 | 27 |
6.8%
|
|
| 7 | 25 |
6.3%
|
|
| 8 | 30 |
7.5%
|
|
| 9 | 23 |
5.8%
|
|
| 10 | Very effective | 12 |
3%
|
| 11 | Don't know | 185 |
46.5%
|
| Sysmiss | 9 |