| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
1.5%
|
|
| 3 | 9 |
4.6%
|
|
| 4 | 7 |
3.6%
|
|
| 5 | 24 |
12.4%
|
|
| 6 | 32 |
16.5%
|
|
| 7 | 30 |
15.5%
|
|
| 8 | 27 |
13.9%
|
|
| 9 | 27 |
13.9%
|
|
| 10 | Very effective | 35 |
18%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 161 |