| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.4%
|
| 2 | 2 |
0.7%
|
|
| 3 | 9 |
3.2%
|
|
| 4 | 16 |
5.8%
|
|
| 5 | 28 |
10.1%
|
|
| 6 | 43 |
15.5%
|
|
| 7 | 45 |
16.2%
|
|
| 8 | 38 |
13.7%
|
|
| 9 | 41 |
14.7%
|
|
| 10 | Very effective | 33 |
11.9%
|
| 11 | 22 |
7.9%
|
|
| Sysmiss | 3 |