| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 7 |
2.3%
|
|
| 3 | 15 |
5%
|
|
| 4 | 14 |
4.6%
|
|
| 5 | 18 |
5.9%
|
|
| 6 | 20 |
6.6%
|
|
| 7 | 26 |
8.6%
|
|
| 8 | 33 |
10.9%
|
|
| 9 | 18 |
5.9%
|
|
| 10 | Very effective | 16 |
5.3%
|
| 11 | 134 |
44.2%
|
|
| Sysmiss | 4 |