| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.5%
|
| 2 | 8 |
5.6%
|
|
| 3 | 18 |
12.7%
|
|
| 4 | 15 |
10.6%
|
|
| 5 | 31 |
21.8%
|
|
| 6 | 17 |
12%
|
|
| 7 | 20 |
14.1%
|
|
| 8 | 20 |
14.1%
|
|
| 9 | 3 |
2.1%
|
|
| 10 | Very effective | 5 |
3.5%
|
| 11 | Don't know | 51 | |
| Sysmiss | 5 |