| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.3%
|
| 2 | 6 |
3.8%
|
|
| 3 | 12 |
7.6%
|
|
| 4 | 18 |
11.5%
|
|
| 5 | 23 |
14.6%
|
|
| 6 | 22 |
14%
|
|
| 7 | 25 |
15.9%
|
|
| 8 | 28 |
17.8%
|
|
| 9 | 10 |
6.4%
|
|
| 10 | Very effective | 11 |
7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 103 |