| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
1.8%
|
| 2 | 1 |
1.8%
|
|
| 3 | 3 |
5.4%
|
|
| 4 | 2 |
3.6%
|
|
| 5 | 6 |
10.7%
|
|
| 6 | 6 |
10.7%
|
|
| 7 | 15 |
26.8%
|
|
| 8 | 9 |
16.1%
|
|
| 9 | 9 |
16.1%
|
|
| 10 | Very effective | 4 |
7.1%
|
| 11 | Don't know | 39 | |
| Sysmiss | 16 |