| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.5%
|
|
| 3 | 2 |
1%
|
|
| 4 | 2 |
1%
|
|
| 5 | 6 |
3%
|
|
| 6 | 17 |
8.5%
|
|
| 7 | 25 |
12.5%
|
|
| 8 | 28 |
14%
|
|
| 9 | 26 |
13%
|
|
| 10 | Very effective | 27 |
13.5%
|
| 11 | Don't know | 66 |
33%
|
| Sysmiss | 26 |