| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.5%
|
|
| 3 | 3 |
1.4%
|
|
| 4 | 13 |
5.9%
|
|
| 5 | 16 |
7.2%
|
|
| 6 | 20 |
9%
|
|
| 7 | 64 |
29%
|
|
| 8 | 62 |
28.1%
|
|
| 9 | 37 |
16.7%
|
|
| 10 | Very effective | 5 |
2.3%
|
| 11 | Don't know | 127 | |
| Sysmiss | 12 |