| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
3.7%
|
| 2 | 6 |
3.2%
|
|
| 3 | 9 |
4.8%
|
|
| 4 | 12 |
6.3%
|
|
| 5 | 23 |
12.2%
|
|
| 6 | 24 |
12.7%
|
|
| 7 | 21 |
11.1%
|
|
| 8 | 18 |
9.5%
|
|
| 9 | 11 |
5.8%
|
|
| 10 | Very effective | 7 |
3.7%
|
| 11 | 51 |
27%
|
|
| Sysmiss | 13 |