| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
6.1%
|
| 2 | 4 |
6.1%
|
|
| 3 | 6 |
9.1%
|
|
| 4 | 5 |
7.6%
|
|
| 5 | 6 |
9.1%
|
|
| 6 | 7 |
10.6%
|
|
| 7 | 12 |
18.2%
|
|
| 8 | 12 |
18.2%
|
|
| 9 | 7 |
10.6%
|
|
| 10 | Very effective | 3 |
4.5%
|
| -99 | 10 | ||
| 11 | Don't know | 66 | |
| Sysmiss | 18 |