| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.8%
|
| 2 | 5 |
2.1%
|
|
| 3 | 8 |
3.3%
|
|
| 4 | 13 |
5.4%
|
|
| 5 | 10 |
4.1%
|
|
| 6 | 18 |
7.5%
|
|
| 7 | 26 |
10.8%
|
|
| 8 | 41 |
17%
|
|
| 9 | 36 |
14.9%
|
|
| 10 | Very effective | 36 |
14.9%
|
| 11 | 46 |
19.1%
|
|
| Sysmiss | 17 |