| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.5%
|
| 2 | 4 |
1.5%
|
|
| 3 | 16 |
6%
|
|
| 4 | 27 |
10.1%
|
|
| 5 | 55 |
20.6%
|
|
| 6 | 31 |
11.6%
|
|
| 7 | 33 |
12.4%
|
|
| 8 | 35 |
13.1%
|
|
| 9 | 22 |
8.2%
|
|
| 10 | Very effective | 40 |
15%
|
| 11 | Don't know | 39 | |
| Sysmiss | 90 |