| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.7%
|
| 2 | 7 |
2.4%
|
|
| 3 | 6 |
2%
|
|
| 4 | 7 |
2.4%
|
|
| 5 | 18 |
6.1%
|
|
| 6 | 31 |
10.4%
|
|
| 7 | 30 |
10.1%
|
|
| 8 | 33 |
11.1%
|
|
| 9 | 18 |
6.1%
|
|
| 10 | Very effective | 22 |
7.4%
|
| 11 | 123 |
41.4%
|
|
| Sysmiss | 10 |