| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.3%
|
| 2 | 3 |
1%
|
|
| 3 | 9 |
2.9%
|
|
| 4 | 12 |
3.8%
|
|
| 5 | 38 |
12.2%
|
|
| 6 | 48 |
15.4%
|
|
| 7 | 52 |
16.7%
|
|
| 8 | 37 |
11.9%
|
|
| 9 | 30 |
9.6%
|
|
| 10 | Very effective | 26 |
8.3%
|
| 11 | 53 |
17%
|
|
| Sysmiss | 15 |