| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.3%
|
| 2 | 2 |
0.9%
|
|
| 3 | 4 |
1.8%
|
|
| 4 | 7 |
3.1%
|
|
| 5 | 13 |
5.7%
|
|
| 6 | 22 |
9.6%
|
|
| 7 | 16 |
7%
|
|
| 8 | 35 |
15.4%
|
|
| 9 | 19 |
8.3%
|
|
| 10 | Very effective | 18 |
7.9%
|
| 11 | Don't know | 89 |
39%
|
| Sysmiss | 7 |