| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.5%
|
|
| 3 | 3 |
1.5%
|
|
| 4 | 7 |
3.5%
|
|
| 5 | 6 |
3%
|
|
| 6 | 10 |
5.1%
|
|
| 7 | 22 |
11.1%
|
|
| 8 | 22 |
11.1%
|
|
| 9 | 19 |
9.6%
|
|
| 10 | Very effective | 18 |
9.1%
|
| 11 | Don't know | 90 |
45.5%
|
| Sysmiss | 28 |