| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.7%
|
| 2 | 5 |
3.5%
|
|
| 3 | 6 |
4.2%
|
|
| 4 | 14 |
9.8%
|
|
| 5 | 39 |
27.3%
|
|
| 6 | 23 |
16.1%
|
|
| 7 | 27 |
18.9%
|
|
| 8 | 10 |
7%
|
|
| 9 | 13 |
9.1%
|
|
| 10 | Very effective | 5 |
3.5%
|
| 11 | Don't know | 19 | |
| Sysmiss | 41 |