| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
5.6%
|
| 3 | 8 |
11.1%
|
|
| 4 | 4 |
5.6%
|
|
| 5 | 4 |
5.6%
|
|
| 6 | 12 |
16.7%
|
|
| 7 | 13 |
18.1%
|
|
| 8 | 11 |
15.3%
|
|
| 9 | 8 |
11.1%
|
|
| 10 | Very effective | 8 |
11.1%
|
| -99 | 8 | ||
| 11 | Don't know | 62 | |
| Sysmiss | 18 |