| Value | Category | Cases | |
|---|---|---|---|
| -99 | 14 |
4.9%
|
|
| 1 | Not effective at all | 13 |
4.5%
|
| 2 | 13 |
4.5%
|
|
| 3 | 15 |
5.2%
|
|
| 4 | 19 |
6.6%
|
|
| 5 | 24 |
8.3%
|
|
| 6 | 12 |
4.2%
|
|
| 7 | 17 |
5.9%
|
|
| 8 | 22 |
7.6%
|
|
| 9 | 10 |
3.5%
|
|
| 10 | Very effective | 16 |
5.6%
|
| 11 | Don't know | 113 |
39.2%
|
| Sysmiss | 38 |