| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.3%
|
| 2 | 6 |
2.5%
|
|
| 3 | 16 |
6.8%
|
|
| 4 | 22 |
9.3%
|
|
| 5 | 40 |
16.9%
|
|
| 6 | 34 |
14.4%
|
|
| 7 | 31 |
13.1%
|
|
| 8 | 44 |
18.6%
|
|
| 9 | 19 |
8.1%
|
|
| 10 | Very effective | 21 |
8.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 43 |