| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 3 |
1.6%
|
|
| 4 | 1 |
0.5%
|
|
| 5 | 13 |
7%
|
|
| 6 | 23 |
12.3%
|
|
| 7 | 46 |
24.6%
|
|
| 8 | 63 |
33.7%
|
|
| 9 | 31 |
16.6%
|
|
| 10 | Very effective | 7 |
3.7%
|
| 11 | Don't know | 13 | |
| Sysmiss | 2 |