| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2.6%
|
| 2 | 7 |
3.1%
|
|
| 3 | 6 |
2.6%
|
|
| 4 | 9 |
3.9%
|
|
| 5 | 19 |
8.3%
|
|
| 6 | 19 |
8.3%
|
|
| 7 | 11 |
4.8%
|
|
| 8 | 21 |
9.2%
|
|
| 9 | 10 |
4.4%
|
|
| 10 | Very effective | 12 |
5.2%
|
| 11 | Don't know | 109 |
47.6%
|
| Sysmiss | 8 |