| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.1%
|
| 2 | 5 |
2.6%
|
|
| 3 | 11 |
5.8%
|
|
| 4 | 11 |
5.8%
|
|
| 5 | 17 |
8.9%
|
|
| 6 | 17 |
8.9%
|
|
| 7 | 27 |
14.1%
|
|
| 8 | 32 |
16.8%
|
|
| 9 | 45 |
23.6%
|
|
| 10 | Very effective | 22 |
11.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 202 |