| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
2%
|
|
| 4 | 3 |
6.1%
|
|
| 5 | 1 |
2%
|
|
| 6 | 5 |
10.2%
|
|
| 7 | 15 |
30.6%
|
|
| 8 | 9 |
18.4%
|
|
| 9 | 4 |
8.2%
|
|
| 10 | Very effective | 11 |
22.4%
|
| 11 | Don't know | 46 | |
| Sysmiss | 14 |