| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
3.1%
|
| 2 | 5 |
3.8%
|
|
| 3 | 5 |
3.8%
|
|
| 4 | 9 |
6.9%
|
|
| 5 | 13 |
10%
|
|
| 6 | 20 |
15.4%
|
|
| 7 | 35 |
26.9%
|
|
| 8 | 26 |
20%
|
|
| 9 | 12 |
9.2%
|
|
| 10 | Very effective | 1 |
0.8%
|
| 11 | Don't know | 89 | |
| Sysmiss | 34 |