| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.2%
|
| 2 | 5 |
2.9%
|
|
| 3 | 5 |
2.9%
|
|
| 4 | 9 |
5.3%
|
|
| 5 | 24 |
14.1%
|
|
| 6 | 12 |
7.1%
|
|
| 7 | 22 |
12.9%
|
|
| 8 | 23 |
13.5%
|
|
| 9 | 34 |
20%
|
|
| 10 | Very effective | 34 |
20%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 162 |