| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
2.1%
|
|
| 3 | 4 |
2.8%
|
|
| 4 | 12 |
8.3%
|
|
| 5 | 36 |
24.8%
|
|
| 6 | 40 |
27.6%
|
|
| 7 | 22 |
15.2%
|
|
| 8 | 14 |
9.7%
|
|
| 9 | 8 |
5.5%
|
|
| 10 | Very effective | 6 |
4.1%
|
| 11 | Don't know | 18 | |
| Sysmiss | 40 |