| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.9%
|
|
| 3 | 7 |
6%
|
|
| 4 | 7 |
6%
|
|
| 5 | 14 |
12%
|
|
| 6 | 16 |
13.7%
|
|
| 7 | 27 |
23.1%
|
|
| 8 | 18 |
15.4%
|
|
| 9 | 12 |
10.3%
|
|
| 10 | Very effective | 15 |
12.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 30 |