| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
2.8%
|
| 2 | 2 |
0.8%
|
|
| 3 | 7 |
2.8%
|
|
| 4 | 13 |
5.3%
|
|
| 5 | 13 |
5.3%
|
|
| 6 | 14 |
5.7%
|
|
| 7 | 31 |
12.6%
|
|
| 8 | 39 |
15.9%
|
|
| 9 | 36 |
14.6%
|
|
| 10 | Very effective | 36 |
14.6%
|
| 11 | 48 |
19.5%
|
|
| Sysmiss | 12 |