| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.2%
|
| 2 | 11 |
5.8%
|
|
| 3 | 14 |
7.4%
|
|
| 4 | 22 |
11.6%
|
|
| 5 | 29 |
15.3%
|
|
| 6 | 20 |
10.6%
|
|
| 7 | 11 |
5.8%
|
|
| 8 | 12 |
6.3%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | Very effective | 3 |
1.6%
|
| 11 | 60 |
31.7%
|
|
| Sysmiss | 13 |