| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
4.2%
|
| 2 | 6 |
3.2%
|
|
| 3 | 15 |
7.9%
|
|
| 4 | 12 |
6.3%
|
|
| 5 | 29 |
15.3%
|
|
| 6 | 19 |
10.1%
|
|
| 7 | 23 |
12.2%
|
|
| 8 | 18 |
9.5%
|
|
| 9 | 5 |
2.6%
|
|
| 10 | Very effective | 6 |
3.2%
|
| 11 | 48 |
25.4%
|
|
| Sysmiss | 13 |