| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.2%
|
| 2 | 5 |
1.5%
|
|
| 3 | 2 |
0.6%
|
|
| 4 | 19 |
5.6%
|
|
| 5 | 41 |
12.2%
|
|
| 6 | 41 |
12.2%
|
|
| 7 | 44 |
13.1%
|
|
| 8 | 40 |
11.9%
|
|
| 9 | 24 |
7.1%
|
|
| 10 | Very effective | 34 |
10.1%
|
| 11 | Don't know | 83 |
24.6%
|
| Sysmiss | 17 |