| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.4%
|
| 2 | 3 |
2.4%
|
|
| 3 | 7 |
5.5%
|
|
| 4 | 11 |
8.7%
|
|
| 5 | 23 |
18.1%
|
|
| 6 | 25 |
19.7%
|
|
| 7 | 23 |
18.1%
|
|
| 8 | 18 |
14.2%
|
|
| 9 | 11 |
8.7%
|
|
| 10 | Very effective | 3 |
2.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 64 |