| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.3%
|
| 2 | 0 |
0%
|
|
| 3 | 3 |
0.8%
|
|
| 4 | 6 |
1.5%
|
|
| 5 | 22 |
5.7%
|
|
| 6 | 36 |
9.3%
|
|
| 7 | 65 |
16.7%
|
|
| 8 | 120 |
30.8%
|
|
| 9 | 63 |
16.2%
|
|
| 10 | Very effective | 53 |
13.6%
|
| 11 | Don't know | 20 |
5.1%
|
| Sysmiss | 40 |