| Value | Category | Cases | |
|---|---|---|---|
| -99 | 6 |
6.7%
|
|
| 1 | Not effective at all | 5 |
5.6%
|
| 2 | 8 |
8.9%
|
|
| 3 | 3 |
3.3%
|
|
| 4 | 9 |
10%
|
|
| 5 | 8 |
8.9%
|
|
| 6 | 7 |
7.8%
|
|
| 7 | 3 |
3.3%
|
|
| 8 | 6 |
6.7%
|
|
| 9 | 5 |
5.6%
|
|
| 10 | Very effective | 7 |
7.8%
|
| 11 | Don't know | 23 |
25.6%
|
| Sysmiss | 4 |