| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
2.9%
|
|
| 1 | Not effective at all | 5 |
7.4%
|
| 2 | 2 |
2.9%
|
|
| 3 | 4 |
5.9%
|
|
| 4 | 1 |
1.5%
|
|
| 5 | 8 |
11.8%
|
|
| 6 | 4 |
5.9%
|
|
| 7 | 5 |
7.4%
|
|
| 8 | 6 |
8.8%
|
|
| 9 | 5 |
7.4%
|
|
| 10 | Very effective | 2 |
2.9%
|
| 11 | Don't know | 24 |
35.3%
|
| Sysmiss | 5 |