| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.6%
|
|
| 3 | 2 |
1.3%
|
|
| 4 | 12 |
7.6%
|
|
| 5 | 17 |
10.8%
|
|
| 6 | 40 |
25.5%
|
|
| 7 | 41 |
26.1%
|
|
| 8 | 25 |
15.9%
|
|
| 9 | 12 |
7.6%
|
|
| 10 | Very effective | 7 |
4.5%
|
| 11 | Don't know | 13 | |
| Sysmiss | 33 |