| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.1%
|
| 2 | 9 |
4.7%
|
|
| 3 | 13 |
6.8%
|
|
| 4 | 15 |
7.9%
|
|
| 5 | 23 |
12.1%
|
|
| 6 | 27 |
14.2%
|
|
| 7 | 18 |
9.5%
|
|
| 8 | 15 |
7.9%
|
|
| 9 | 10 |
5.3%
|
|
| 10 | Very effective | 8 |
4.2%
|
| 11 | 48 |
25.3%
|
|
| Sysmiss | 12 |