| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.9%
|
|
| 1 | Not effective at all | 3 |
1.4%
|
| 2 | 0 |
0%
|
|
| 3 | 4 |
1.9%
|
|
| 4 | 10 |
4.7%
|
|
| 5 | 14 |
6.5%
|
|
| 6 | 26 |
12.1%
|
|
| 7 | 17 |
7.9%
|
|
| 8 | 31 |
14.5%
|
|
| 9 | 25 |
11.7%
|
|
| 10 | Very effective | 43 |
20.1%
|
| 11 | Don't know | 39 |
18.2%
|
| Sysmiss | 6 |