| Value | Category | Cases | |
|---|---|---|---|
| -99 | 11 |
3.8%
|
|
| 1 | Not effective at all | 13 |
4.5%
|
| 2 | 20 |
6.8%
|
|
| 3 | 16 |
5.5%
|
|
| 4 | 17 |
5.8%
|
|
| 5 | 23 |
7.9%
|
|
| 6 | 11 |
3.8%
|
|
| 7 | 9 |
3.1%
|
|
| 8 | 13 |
4.5%
|
|
| 9 | 20 |
6.8%
|
|
| 10 | Very effective | 19 |
6.5%
|
| 11 | Don't know | 120 |
41.1%
|
| Sysmiss | 34 |