| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
1.9%
|
| 3 | 5 |
9.3%
|
|
| 4 | 1 |
1.9%
|
|
| 5 | 6 |
11.1%
|
|
| 6 | 13 |
24.1%
|
|
| 7 | 10 |
18.5%
|
|
| 8 | 11 |
20.4%
|
|
| 9 | 5 |
9.3%
|
|
| 10 | Very effective | 2 |
3.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 84 |