| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.4%
|
| 2 | 3 |
2.4%
|
|
| 3 | 4 |
3.3%
|
|
| 4 | 3 |
2.4%
|
|
| 5 | 6 |
4.9%
|
|
| 6 | 9 |
7.3%
|
|
| 7 | 8 |
6.5%
|
|
| 8 | 2 |
1.6%
|
|
| 9 | 3 |
2.4%
|
|
| 10 | Very effective | 3 |
2.4%
|
| 11 | Don't know | 79 |
64.2%
|
| Sysmiss | 33 |