| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 3 |
1.1%
|
|
| 3 | 4 |
1.5%
|
|
| 4 | 15 |
5.5%
|
|
| 5 | 34 |
12.5%
|
|
| 6 | 49 |
18%
|
|
| 7 | 43 |
15.8%
|
|
| 8 | 43 |
15.8%
|
|
| 9 | 27 |
9.9%
|
|
| 10 | Very effective | 28 |
10.3%
|
| 11 | 24 |
8.8%
|
|
| Sysmiss | 9 |