| Value | Category | Cases | |
|---|---|---|---|
| -99 | 3 |
0.9%
|
|
| 1 | Not effective at all | 2 |
0.6%
|
| 2 | 0 |
0%
|
|
| 3 | 4 |
1.2%
|
|
| 4 | 5 |
1.5%
|
|
| 5 | 23 |
6.9%
|
|
| 6 | 30 |
9%
|
|
| 7 | 49 |
14.7%
|
|
| 8 | 72 |
21.6%
|
|
| 9 | 23 |
6.9%
|
|
| 10 | Very effective | 11 |
3.3%
|
| 11 | Don't know | 111 |
33.3%
|
| Sysmiss | 7 |