| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
2.6%
|
| 2 | 3 |
1.5%
|
|
| 3 | 12 |
6.1%
|
|
| 4 | 12 |
6.1%
|
|
| 5 | 27 |
13.8%
|
|
| 6 | 30 |
15.3%
|
|
| 7 | 24 |
12.2%
|
|
| 8 | 22 |
11.2%
|
|
| 9 | 8 |
4.1%
|
|
| 10 | Very effective | 19 |
9.7%
|
| 11 | 34 |
17.3%
|
|
| Sysmiss | 6 |