| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.5%
|
| 2 | 1 |
0.5%
|
|
| 3 | 4 |
2.1%
|
|
| 4 | 7 |
3.6%
|
|
| 5 | 24 |
12.4%
|
|
| 6 | 22 |
11.3%
|
|
| 7 | 60 |
30.9%
|
|
| 8 | 48 |
24.7%
|
|
| 9 | 22 |
11.3%
|
|
| 10 | Very effective | 3 |
1.5%
|
| 11 | Don't know | 152 | |
| Sysmiss | 14 |