| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 5 |
1.8%
|
|
| 3 | 6 |
2.2%
|
|
| 4 | 17 |
6.1%
|
|
| 5 | 23 |
8.3%
|
|
| 6 | 36 |
13%
|
|
| 7 | 38 |
13.7%
|
|
| 8 | 50 |
18.1%
|
|
| 9 | 43 |
15.5%
|
|
| 10 | Very effective | 28 |
10.1%
|
| 11 | 29 |
10.5%
|
|
| Sysmiss | 4 |