| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.4%
|
| 2 | 2 |
1.4%
|
|
| 3 | 4 |
2.8%
|
|
| 4 | 4 |
2.8%
|
|
| 5 | 11 |
7.6%
|
|
| 6 | 27 |
18.6%
|
|
| 7 | 38 |
26.2%
|
|
| 8 | 37 |
25.5%
|
|
| 9 | 13 |
9%
|
|
| 10 | Very effective | 7 |
4.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 149 |