| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 1 |
1.1%
|
|
| 4 | 4 |
4.2%
|
|
| 5 | 11 |
11.6%
|
|
| 6 | 11 |
11.6%
|
|
| 7 | 23 |
24.2%
|
|
| 8 | 27 |
28.4%
|
|
| 9 | 11 |
11.6%
|
|
| 10 | Very effective | 7 |
7.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 19 |