| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.8%
|
| 2 | 7 |
2.5%
|
|
| 3 | 5 |
1.8%
|
|
| 4 | 13 |
4.6%
|
|
| 5 | 20 |
7.1%
|
|
| 6 | 18 |
6.4%
|
|
| 7 | 18 |
6.4%
|
|
| 8 | 10 |
3.5%
|
|
| 9 | 11 |
3.9%
|
|
| 10 | Very effective | 9 |
3.2%
|
| 11 | Don't know | 164 |
58%
|
| Sysmiss | 20 |