| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
4.4%
|
| 2 | 3 |
4.4%
|
|
| 3 | 4 |
5.9%
|
|
| 4 | 10 |
14.7%
|
|
| 5 | 11 |
16.2%
|
|
| 6 | 18 |
26.5%
|
|
| 7 | 12 |
17.6%
|
|
| 8 | 4 |
5.9%
|
|
| 9 | 2 |
2.9%
|
|
| 10 | Very effective | 1 |
1.5%
|
| 11 | Don't know | 47 | |
| Sysmiss | 19 |