| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
2%
|
|
| 4 | 2 |
3.9%
|
|
| 6 | 7 |
13.7%
|
|
| 7 | 8 |
15.7%
|
|
| 8 | 14 |
27.5%
|
|
| 9 | 9 |
17.6%
|
|
| 10 | Very effective | 10 |
19.6%
|
| 11 | Don't know | 42 | |
| Sysmiss | 16 |