| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 24 |
8.2%
|
| 2 | 6 |
2%
|
|
| 3 | 14 |
4.8%
|
|
| 4 | 25 |
8.5%
|
|
| 5 | 68 |
23.2%
|
|
| 6 | 60 |
20.5%
|
|
| 7 | 22 |
7.5%
|
|
| 8 | 12 |
4.1%
|
|
| 9 | 7 |
2.4%
|
|
| 10 | Very effective | 4 |
1.4%
|
| 11 | 51 |
17.4%
|
|
| Sysmiss | 8 |