| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.7%
|
| 2 | 0 |
0%
|
|
| 3 | 8 |
3.4%
|
|
| 4 | 4 |
1.7%
|
|
| 5 | 7 |
3%
|
|
| 6 | 14 |
5.9%
|
|
| 7 | 22 |
9.3%
|
|
| 8 | 14 |
5.9%
|
|
| 9 | 17 |
7.2%
|
|
| 10 | Very effective | 70 |
29.7%
|
| 11 | 76 |
32.2%
|
|
| Sysmiss | 22 |