| Value | Category | Cases | |
|---|---|---|---|
| -99 | 2 |
0.9%
|
|
| 1 | Not effective at all | 2 |
0.9%
|
| 2 | 2 |
0.9%
|
|
| 3 | 5 |
2.2%
|
|
| 4 | 12 |
5.2%
|
|
| 5 | 14 |
6.1%
|
|
| 6 | 26 |
11.3%
|
|
| 7 | 33 |
14.3%
|
|
| 8 | 35 |
15.2%
|
|
| 9 | 19 |
8.3%
|
|
| 10 | Very effective | 23 |
10%
|
| 11 | Don't know | 57 |
24.8%
|
| Sysmiss | 7 |