| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.3%
|
| 2 | 2 |
0.7%
|
|
| 3 | 5 |
1.6%
|
|
| 4 | 13 |
4.3%
|
|
| 5 | 24 |
7.9%
|
|
| 6 | 30 |
9.8%
|
|
| 7 | 60 |
19.7%
|
|
| 8 | 87 |
28.5%
|
|
| 9 | 58 |
19%
|
|
| 10 | Very effective | 25 |
8.2%
|
| 11 | Don't know | 50 | |
| Sysmiss | 5 |