| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.4%
|
| 2 | 6 |
2.9%
|
|
| 3 | 12 |
5.7%
|
|
| 4 | 14 |
6.7%
|
|
| 5 | 24 |
11.4%
|
|
| 6 | 31 |
14.8%
|
|
| 7 | 41 |
19.5%
|
|
| 8 | 49 |
23.3%
|
|
| 9 | 14 |
6.7%
|
|
| 10 | Very effective | 14 |
6.7%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 230 |