| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.6%
|
| 2 | 1 |
0.5%
|
|
| 3 | 3 |
1.6%
|
|
| 4 | 5 |
2.6%
|
|
| 5 | 12 |
6.3%
|
|
| 6 | 13 |
6.8%
|
|
| 7 | 23 |
12%
|
|
| 8 | 26 |
13.6%
|
|
| 9 | 15 |
7.9%
|
|
| 10 | Very effective | 17 |
8.9%
|
| 11 | Don't know | 73 |
38.2%
|
| Sysmiss | 10 |