| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
1.9%
|
| 2 | 11 |
3%
|
|
| 3 | 19 |
5.1%
|
|
| 4 | 36 |
9.7%
|
|
| 5 | 46 |
12.4%
|
|
| 6 | 53 |
14.3%
|
|
| 7 | 56 |
15.1%
|
|
| 8 | 57 |
15.4%
|
|
| 9 | 51 |
13.7%
|
|
| 10 | Very effective | 35 |
9.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 104 |