| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.6%
|
| 2 | 4 |
1.3%
|
|
| 3 | 12 |
3.9%
|
|
| 4 | 20 |
6.5%
|
|
| 5 | 34 |
11.1%
|
|
| 6 | 38 |
12.4%
|
|
| 7 | 50 |
16.3%
|
|
| 8 | 37 |
12.1%
|
|
| 9 | 22 |
7.2%
|
|
| 10 | Very effective | 28 |
9.2%
|
| 11 | 56 |
18.3%
|
|
| Sysmiss | 21 |