| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
5.9%
|
| 3 | 2 |
3.9%
|
|
| 4 | 2 |
3.9%
|
|
| 5 | 8 |
15.7%
|
|
| 6 | 10 |
19.6%
|
|
| 7 | 10 |
19.6%
|
|
| 8 | 13 |
25.5%
|
|
| 9 | 3 |
5.9%
|
|
| 10 | Very effective | 0 |
0%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 90 |