| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
4.7%
|
| 2 | 12 |
4.4%
|
|
| 3 | 8 |
2.9%
|
|
| 4 | 12 |
4.4%
|
|
| 5 | 21 |
7.7%
|
|
| 6 | 16 |
5.8%
|
|
| 7 | 25 |
9.1%
|
|
| 8 | 24 |
8.8%
|
|
| 9 | 18 |
6.6%
|
|
| 10 | Very effective | 21 |
7.7%
|
| 11 | 104 |
38%
|
|
| Sysmiss | 33 |