| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.7%
|
| 2 | 2 |
1.2%
|
|
| 3 | 2 |
1.2%
|
|
| 4 | 7 |
4.3%
|
|
| 5 | 10 |
6.2%
|
|
| 6 | 15 |
9.3%
|
|
| 7 | 26 |
16.1%
|
|
| 8 | 12 |
7.5%
|
|
| 9 | 6 |
3.7%
|
|
| 10 | Very effective | 4 |
2.5%
|
| 11 | Don't know | 71 |
44.1%
|
| Sysmiss | 25 |