| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1%
|
| 2 | 6 |
2%
|
|
| 3 | 28 |
9.5%
|
|
| 4 | 26 |
8.8%
|
|
| 5 | 50 |
16.9%
|
|
| 6 | 31 |
10.5%
|
|
| 7 | 20 |
6.8%
|
|
| 8 | 26 |
8.8%
|
|
| 9 | 14 |
4.7%
|
|
| 10 | Very effective | 9 |
3.1%
|
| 11 | Don't know | 82 |
27.8%
|
| Sysmiss | 6 |