| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
6.7%
|
| 2 | 4 |
8.9%
|
|
| 3 | 4 |
8.9%
|
|
| 4 | 3 |
6.7%
|
|
| 5 | 8 |
17.8%
|
|
| 6 | 5 |
11.1%
|
|
| 7 | 7 |
15.6%
|
|
| 8 | 7 |
15.6%
|
|
| 9 | 3 |
6.7%
|
|
| 10 | Very effective | 1 |
2.2%
|
| 11 | N/A | 48 | |
| Sysmiss | 13 |