| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.5%
|
|
| 3 | 5 |
2.4%
|
|
| 4 | 10 |
4.7%
|
|
| 5 | 19 |
9%
|
|
| 6 | 15 |
7.1%
|
|
| 7 | 49 |
23.1%
|
|
| 8 | 70 |
33%
|
|
| 9 | 41 |
19.3%
|
|
| 10 | Very effective | 2 |
0.9%
|
| 11 | Don't know | 131 | |
| Sysmiss | 17 |