| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.2%
|
| 2 | 7 |
3.7%
|
|
| 3 | 15 |
7.9%
|
|
| 4 | 10 |
5.3%
|
|
| 5 | 23 |
12.2%
|
|
| 6 | 18 |
9.5%
|
|
| 7 | 14 |
7.4%
|
|
| 8 | 19 |
10.1%
|
|
| 9 | 8 |
4.2%
|
|
| 10 | Very effective | 8 |
4.2%
|
| 11 | 61 |
32.3%
|
|
| Sysmiss | 13 |