| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
2.9%
|
|
| 1 | Not effective at all | 2 |
1.9%
|
| 2 | 1 |
1%
|
|
| 3 | 5 |
4.9%
|
|
| 4 | 6 |
5.8%
|
|
| 5 | 18 |
17.5%
|
|
| 6 | 5 |
4.9%
|
|
| 7 | 9 |
8.7%
|
|
| 8 | 9 |
8.7%
|
|
| 9 | 6 |
5.8%
|
|
| 10 | Very effective | 1 |
1%
|
| 11 | Don't know | 38 |
36.9%
|
| Sysmiss | 4 |