| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.8%
|
| 2 | 4 |
1.6%
|
|
| 3 | 3 |
1.2%
|
|
| 4 | 17 |
7%
|
|
| 5 | 25 |
10.3%
|
|
| 6 | 40 |
16.5%
|
|
| 7 | 46 |
18.9%
|
|
| 8 | 52 |
21.4%
|
|
| 9 | 40 |
16.5%
|
|
| 10 | Very effective | 14 |
5.8%
|
| 11 | Don't know | 123 | |
| Sysmiss | 55 |