| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.1%
|
| 2 | 6 |
3.2%
|
|
| 3 | 12 |
6.3%
|
|
| 4 | 15 |
7.9%
|
|
| 5 | 23 |
12.1%
|
|
| 6 | 30 |
15.8%
|
|
| 7 | 22 |
11.6%
|
|
| 8 | 20 |
10.5%
|
|
| 9 | 6 |
3.2%
|
|
| 10 | Very effective | 9 |
4.7%
|
| 11 | 43 |
22.6%
|
|
| Sysmiss | 12 |