| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
4.2%
|
| 2 | 8 |
3.8%
|
|
| 3 | 6 |
2.8%
|
|
| 4 | 8 |
3.8%
|
|
| 5 | 12 |
5.6%
|
|
| 6 | 14 |
6.6%
|
|
| 7 | 20 |
9.4%
|
|
| 8 | 20 |
9.4%
|
|
| 9 | 10 |
4.7%
|
|
| 10 | Very effective | 7 |
3.3%
|
| 11 | Don't know | 99 |
46.5%
|
| Sysmiss | 12 |