| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.5%
|
| 2 | 2 |
0.9%
|
|
| 3 | 8 |
3.7%
|
|
| 4 | 3 |
1.4%
|
|
| 5 | 21 |
9.6%
|
|
| 6 | 13 |
6%
|
|
| 7 | 16 |
7.3%
|
|
| 8 | 23 |
10.6%
|
|
| 9 | 12 |
5.5%
|
|
| 10 | Very effective | 39 |
17.9%
|
| 11 | Don't know | 80 |
36.7%
|
| Sysmiss | 3 |