| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 25 |
14.9%
|
| 2 | 11 |
6.5%
|
|
| 3 | 9 |
5.4%
|
|
| 4 | 13 |
7.7%
|
|
| 5 | 17 |
10.1%
|
|
| 6 | 22 |
13.1%
|
|
| 7 | 16 |
9.5%
|
|
| 8 | 16 |
9.5%
|
|
| 9 | 8 |
4.8%
|
|
| 10 | Very effective | 31 |
18.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 174 |