| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.4%
|
| 2 | 1 |
0.4%
|
|
| 3 | 10 |
3.6%
|
|
| 4 | 25 |
9%
|
|
| 5 | 31 |
11.2%
|
|
| 6 | 49 |
17.7%
|
|
| 7 | 48 |
17.3%
|
|
| 8 | 33 |
11.9%
|
|
| 9 | 33 |
11.9%
|
|
| 10 | Very effective | 18 |
6.5%
|
| 11 | 28 |
10.1%
|
|
| Sysmiss | 4 |