| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.7%
|
| 2 | 2 |
1.4%
|
|
| 3 | 2 |
1.4%
|
|
| 4 | 7 |
5%
|
|
| 5 | 1 |
0.7%
|
|
| 6 | 7 |
5%
|
|
| 7 | 11 |
7.9%
|
|
| 8 | 18 |
12.9%
|
|
| 9 | 19 |
13.7%
|
|
| 10 | Very effective | 9 |
6.5%
|
| 11 | Don’t know | 62 |
44.6%
|
| Sysmiss | 26 |