| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
2.9%
|
|
| 3 | 1 |
1.4%
|
|
| 4 | 4 |
5.7%
|
|
| 5 | 4 |
5.7%
|
|
| 6 | 9 |
12.9%
|
|
| 7 | 14 |
20%
|
|
| 8 | 18 |
25.7%
|
|
| 9 | 13 |
18.6%
|
|
| 10 | Very effective | 5 |
7.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 68 |