| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.7%
|
| 2 | 2 |
2.7%
|
|
| 3 | 2 |
2.7%
|
|
| 4 | 1 |
1.3%
|
|
| 5 | 1 |
1.3%
|
|
| 6 | 4 |
5.3%
|
|
| 7 | 11 |
14.7%
|
|
| 8 | 14 |
18.7%
|
|
| 9 | 20 |
26.7%
|
|
| 10 | Very effective | 18 |
24%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 89 |