| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
2.6%
|
|
| 4 | 4 |
10.5%
|
|
| 5 | 2 |
5.3%
|
|
| 6 | 6 |
15.8%
|
|
| 7 | 8 |
21.1%
|
|
| 8 | 13 |
34.2%
|
|
| 9 | 3 |
7.9%
|
|
| 10 | Very effective | 1 |
2.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 47 |