| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.2%
|
| 2 | 7 |
2.9%
|
|
| 3 | 15 |
6.2%
|
|
| 4 | 15 |
6.2%
|
|
| 5 | 45 |
18.7%
|
|
| 6 | 30 |
12.4%
|
|
| 7 | 37 |
15.4%
|
|
| 8 | 46 |
19.1%
|
|
| 9 | 20 |
8.3%
|
|
| 10 | Very effective | 23 |
9.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 38 |