| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
2.1%
|
| 3 | 2 |
4.3%
|
|
| 4 | 3 |
6.4%
|
|
| 5 | 16 |
34%
|
|
| 6 | 5 |
10.6%
|
|
| 7 | 5 |
10.6%
|
|
| 8 | 7 |
14.9%
|
|
| 9 | 5 |
10.6%
|
|
| 10 | Very effective | 3 |
6.4%
|
| 11 | Don't know | 36 | |
| Sysmiss | 23 |