| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
6.5%
|
| 2 | 6 |
5.6%
|
|
| 3 | 9 |
8.4%
|
|
| 4 | 14 |
13.1%
|
|
| 5 | 14 |
13.1%
|
|
| 6 | 21 |
19.6%
|
|
| 7 | 13 |
12.1%
|
|
| 8 | 10 |
9.3%
|
|
| 9 | 9 |
8.4%
|
|
| 10 | Very effective | 4 |
3.7%
|
| 11 | Don't know | 95 | |
| Sysmiss | 36 |