| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
1.1%
|
|
| 1 | Not effective at all | 3 |
1.1%
|
| 2 | 5 |
1.9%
|
|
| 3 | 8 |
3%
|
|
| 4 | 29 |
10.9%
|
|
| 5 | 38 |
14.3%
|
|
| 6 | 48 |
18.1%
|
|
| 7 | 31 |
11.7%
|
|
| 8 | 33 |
12.5%
|
|
| 9 | 14 |
5.3%
|
|
| 10 | Very effective | 24 |
9.1%
|
| 11 | Don't know | 29 |
10.9%
|
| Sysmiss | 6 |