| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.1%
|
| 2 | 2 |
3.1%
|
|
| 3 | 1 |
1.5%
|
|
| 4 | 2 |
3.1%
|
|
| 5 | 3 |
4.6%
|
|
| 6 | 3 |
4.6%
|
|
| 7 | 2 |
3.1%
|
|
| 11 | Don’t know | 31 |
47.7%
|
| Sysmiss | 19 |
29.2%
|