| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.1%
|
| 3 | 2 |
3.1%
|
|
| 4 | 2 |
3.1%
|
|
| 5 | 5 |
7.7%
|
|
| 6 | 4 |
6.2%
|
|
| 7 | 2 |
3.1%
|
|
| 8 | 1 |
1.5%
|
|
| 11 | Don’t know | 30 |
46.2%
|
| Sysmiss | 17 |
26.2%
|