| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
10.6%
|
| 2 | 9 |
6.3%
|
|
| 3 | 11 |
7.7%
|
|
| 4 | 14 |
9.9%
|
|
| 5 | 33 |
23.2%
|
|
| 6 | 14 |
9.9%
|
|
| 7 | 15 |
10.6%
|
|
| 8 | 22 |
15.5%
|
|
| 9 | 8 |
5.6%
|
|
| 10 | Very effective | 1 |
0.7%
|
| 11 | Don't know | 92 | |
| Sysmiss | 55 |