| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 3 |
0.8%
|
|
| 4 | 18 |
5%
|
|
| 5 | 50 |
13.9%
|
|
| 6 | 54 |
15%
|
|
| 7 | 71 |
19.8%
|
|
| 8 | 72 |
20.1%
|
|
| 9 | 55 |
15.3%
|
|
| 10 | Very effective | 35 |
9.7%
|
| 11 | Don't know | 43 | |
| Sysmiss | 21 |