| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.4%
|
| 2 | 0 |
0%
|
|
| 3 | 0 |
0%
|
|
| 4 | 10 |
7.1%
|
|
| 5 | 3 |
2.1%
|
|
| 6 | 10 |
7.1%
|
|
| 7 | 11 |
7.8%
|
|
| 8 | 24 |
17%
|
|
| 9 | 14 |
9.9%
|
|
| 10 | Very effective | 12 |
8.5%
|
| 11 | Don't know | 55 |
39%
|
| Sysmiss | 16 |