| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
2%
|
| 2 | 1 |
2%
|
|
| 3 | 3 |
6.1%
|
|
| 4 | 3 |
6.1%
|
|
| 5 | 4 |
8.2%
|
|
| 6 | 9 |
18.4%
|
|
| 7 | 6 |
12.2%
|
|
| 8 | 14 |
28.6%
|
|
| 9 | 7 |
14.3%
|
|
| 10 | Very effective | 1 |
2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 89 |