| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 2 |
2.6%
|
|
| 4 | 5 |
6.6%
|
|
| 5 | 4 |
5.3%
|
|
| 6 | 18 |
23.7%
|
|
| 7 | 22 |
28.9%
|
|
| 8 | 12 |
15.8%
|
|
| 9 | 10 |
13.2%
|
|
| 10 | Very effective | 3 |
3.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 71 |