| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.4%
|
| 2 | 1 |
0.7%
|
|
| 3 | 6 |
4.2%
|
|
| 4 | 13 |
9.1%
|
|
| 5 | 19 |
13.3%
|
|
| 6 | 21 |
14.7%
|
|
| 7 | 27 |
18.9%
|
|
| 8 | 38 |
26.6%
|
|
| 9 | 9 |
6.3%
|
|
| 10 | Very effective | 7 |
4.9%
|
| 11 | Don't know | 40 | |
| Sysmiss | 10 |