| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.6%
|
| 2 | 3 |
1.6%
|
|
| 3 | 5 |
2.6%
|
|
| 4 | 13 |
6.7%
|
|
| 5 | 26 |
13.5%
|
|
| 6 | 22 |
11.4%
|
|
| 7 | 26 |
13.5%
|
|
| 8 | 30 |
15.5%
|
|
| 9 | 24 |
12.4%
|
|
| 10 | Very effective | 41 |
21.2%
|
| 11 | Don’t know | 0 |
0%
|
| Sysmiss | 33 |