| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1%
|
| 2 | 4 |
1.4%
|
|
| 3 | 6 |
2%
|
|
| 4 | 22 |
7.5%
|
|
| 5 | 54 |
18.3%
|
|
| 6 | 29 |
9.8%
|
|
| 7 | 26 |
8.8%
|
|
| 8 | 26 |
8.8%
|
|
| 9 | 15 |
5.1%
|
|
| 10 | Very effective | 8 |
2.7%
|
| 11 | Don't know | 102 |
34.6%
|
| Sysmiss | 6 |