| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 3 |
0.8%
|
|
| 4 | 11 |
2.9%
|
|
| 5 | 47 |
12.5%
|
|
| 6 | 66 |
17.6%
|
|
| 7 | 87 |
23.1%
|
|
| 8 | 67 |
17.8%
|
|
| 9 | 65 |
17.3%
|
|
| 10 | Very effective | 29 |
7.7%
|
| 11 | Don't know | 27 | |
| Sysmiss | 20 |