| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.9%
|
| 2 | 6 |
2.2%
|
|
| 3 | 10 |
3.6%
|
|
| 4 | 7 |
2.5%
|
|
| 5 | 41 |
14.7%
|
|
| 6 | 21 |
7.6%
|
|
| 7 | 25 |
9%
|
|
| 8 | 22 |
7.9%
|
|
| 9 | 13 |
4.7%
|
|
| 10 | Very effective | 24 |
8.6%
|
| 11 | 101 |
36.3%
|
|
| Sysmiss | 29 |