| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.8%
|
| 2 | 6 |
2.2%
|
|
| 3 | 7 |
2.5%
|
|
| 4 | 7 |
2.5%
|
|
| 5 | 26 |
9.4%
|
|
| 6 | 20 |
7.2%
|
|
| 7 | 29 |
10.5%
|
|
| 8 | 23 |
8.3%
|
|
| 9 | 19 |
6.9%
|
|
| 10 | Very effective | 24 |
8.7%
|
| 11 | 110 |
39.9%
|
|
| Sysmiss | 31 |