| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.5%
|
| 2 | 3 |
0.9%
|
|
| 3 | 13 |
4%
|
|
| 4 | 22 |
6.8%
|
|
| 5 | 37 |
11.4%
|
|
| 6 | 52 |
16%
|
|
| 7 | 35 |
10.8%
|
|
| 8 | 22 |
6.8%
|
|
| 9 | 10 |
3.1%
|
|
| 10 | Very effective | 12 |
3.7%
|
| 11 | Don't know | 113 |
34.9%
|
| Sysmiss | 30 |