| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.3%
|
| 2 | 2 |
0.8%
|
|
| 3 | 6 |
2.5%
|
|
| 4 | 14 |
5.8%
|
|
| 5 | 22 |
9.2%
|
|
| 6 | 34 |
14.2%
|
|
| 7 | 54 |
22.5%
|
|
| 8 | 58 |
24.2%
|
|
| 9 | 21 |
8.8%
|
|
| 10 | Very effective | 26 |
10.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 200 |