| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
6.9%
|
| 2 | 18 |
8.9%
|
|
| 3 | 8 |
3.9%
|
|
| 4 | 10 |
4.9%
|
|
| 5 | 27 |
13.3%
|
|
| 6 | 17 |
8.4%
|
|
| 7 | 12 |
5.9%
|
|
| 8 | 14 |
6.9%
|
|
| 9 | 10 |
4.9%
|
|
| 10 | Very effective | 15 |
7.4%
|
| 11 | 58 |
28.6%
|
|
| Sysmiss | 19 |