| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
4.8%
|
| 2 | 5 |
3.4%
|
|
| 3 | 8 |
5.5%
|
|
| 4 | 9 |
6.2%
|
|
| 5 | 19 |
13.1%
|
|
| 6 | 28 |
19.3%
|
|
| 7 | 23 |
15.9%
|
|
| 8 | 21 |
14.5%
|
|
| 9 | 11 |
7.6%
|
|
| 10 | Very effective | 14 |
9.7%
|
| 11 | NA | 0 |
0%
|
| 12 | Don't know | 0 |
0%
|
| Sysmiss | 210 |