| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
6.3%
|
| 2 | 3 |
3.8%
|
|
| 3 | 2 |
2.5%
|
|
| 4 | 2 |
2.5%
|
|
| 5 | 7 |
8.9%
|
|
| 6 | 5 |
6.3%
|
|
| 7 | 10 |
12.7%
|
|
| 8 | 12 |
15.2%
|
|
| 9 | 12 |
15.2%
|
|
| 10 | Very effective | 21 |
26.6%
|
| 11 | Don't know | 73 | |
| Sysmiss | 28 |