| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.3%
|
| 2 | 3 |
1.3%
|
|
| 3 | 10 |
4.5%
|
|
| 4 | 13 |
5.8%
|
|
| 5 | 33 |
14.8%
|
|
| 6 | 18 |
8.1%
|
|
| 7 | 32 |
14.3%
|
|
| 8 | 29 |
13%
|
|
| 9 | 35 |
15.7%
|
|
| 10 | Very effective | 47 |
21.1%
|
| 11 | Don't know | 45 | |
| Sysmiss | 51 |