| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
5%
|
| 2 | 4 |
2.5%
|
|
| 3 | 6 |
3.8%
|
|
| 4 | 10 |
6.3%
|
|
| 5 | 19 |
11.9%
|
|
| 6 | 10 |
6.3%
|
|
| 7 | 27 |
16.9%
|
|
| 8 | 19 |
11.9%
|
|
| 9 | 24 |
15%
|
|
| 10 | Very effective | 33 |
20.6%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 172 |