| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.3%
|
| 2 | 5 |
2%
|
|
| 3 | 7 |
2.7%
|
|
| 4 | 8 |
3.1%
|
|
| 5 | 13 |
5.1%
|
|
| 6 | 8 |
3.1%
|
|
| 7 | 13 |
5.1%
|
|
| 8 | 14 |
5.5%
|
|
| 9 | 11 |
4.3%
|
|
| 10 | Very effective | 28 |
10.9%
|
| 11 | Don't know | 143 |
55.9%
|
| Sysmiss | 37 |