| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 2 |
0.7%
|
|
| 3 | 14 |
5.1%
|
|
| 4 | 28 |
10.1%
|
|
| 5 | 42 |
15.2%
|
|
| 6 | 43 |
15.5%
|
|
| 7 | 44 |
15.9%
|
|
| 8 | 38 |
13.7%
|
|
| 9 | 29 |
10.5%
|
|
| 10 | Very effective | 15 |
5.4%
|
| 11 | 20 |
7.2%
|
|
| Sysmiss | 4 |