| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
6.5%
|
| 2 | 12 |
6%
|
|
| 3 | 13 |
6.5%
|
|
| 4 | 14 |
7%
|
|
| 5 | 19 |
9.5%
|
|
| 6 | 16 |
8%
|
|
| 7 | 16 |
8%
|
|
| 8 | 19 |
9.5%
|
|
| 9 | 11 |
5.5%
|
|
| 10 | Very effective | 17 |
8.5%
|
| 11 | 50 |
25%
|
|
| Sysmiss | 22 |