| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 | 2 |
1.6%
|
| 3 | 3 | 5 |
4.1%
|
| 4 | 4 | 6 |
4.9%
|
| 5 | 5 | 9 |
7.4%
|
| 6 | 6 | 16 |
13.1%
|
| 7 | 7 | 14 |
11.5%
|
| 8 | 8 | 10 |
8.2%
|
| 9 | 9 | 8 |
6.6%
|
| 10 | Very effective | 6 |
4.9%
|
| 11 | Don't know | 46 |
37.7%
|
| Sysmiss | 24 |