| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.2%
|
| 2 | 2 |
2.2%
|
|
| 3 | 5 |
5.6%
|
|
| 4 | 3 |
3.4%
|
|
| 5 | 12 |
13.5%
|
|
| 6 | 12 |
13.5%
|
|
| 7 | 16 |
18%
|
|
| 8 | 7 |
7.9%
|
|
| 9 | 17 |
19.1%
|
|
| 10 | Very effective | 13 |
14.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 77 |