| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.4%
|
| 2 | 4 |
1.8%
|
|
| 3 | 4 |
1.8%
|
|
| 4 | 7 |
3.1%
|
|
| 5 | 28 |
12.6%
|
|
| 6 | 23 |
10.3%
|
|
| 7 | 36 |
16.1%
|
|
| 8 | 53 |
23.8%
|
|
| 9 | 36 |
16.1%
|
|
| 10 | Very effective | 31 |
13.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 27 |