| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.9%
|
| 2 | 8 |
2.9%
|
|
| 3 | 12 |
4.3%
|
|
| 4 | 10 |
3.6%
|
|
| 5 | 24 |
8.7%
|
|
| 6 | 27 |
9.8%
|
|
| 7 | 21 |
7.6%
|
|
| 8 | 19 |
6.9%
|
|
| 9 | 18 |
6.5%
|
|
| 10 | Very effective | 21 |
7.6%
|
| 11 | 108 |
39.1%
|
|
| Sysmiss | 31 |