| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 14 |
5.5%
|
| 2 | 7 |
2.8%
|
|
| 3 | 9 |
3.5%
|
|
| 4 | 16 |
6.3%
|
|
| 5 | 27 |
10.6%
|
|
| 6 | 31 |
12.2%
|
|
| 7 | 26 |
10.2%
|
|
| 8 | 29 |
11.4%
|
|
| 9 | 18 |
7.1%
|
|
| 10 | Very effective | 24 |
9.4%
|
| 11 | 53 |
20.9%
|
|
| Sysmiss | 10 |