| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 20 |
8.4%
|
| 2 | 19 |
8%
|
|
| 3 | 16 |
6.7%
|
|
| 4 | 15 |
6.3%
|
|
| 5 | 17 |
7.1%
|
|
| 6 | 19 |
8%
|
|
| 7 | 22 |
9.2%
|
|
| 8 | 29 |
12.2%
|
|
| 9 | 13 |
5.5%
|
|
| 10 | Very effective | 27 |
11.3%
|
| 11 | 41 |
17.2%
|
|
| Sysmiss | 20 |