| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
5.7%
|
| 2 | 7 |
5%
|
|
| 3 | 9 |
6.4%
|
|
| 4 | 5 |
3.5%
|
|
| 5 | 23 |
16.3%
|
|
| 6 | 12 |
8.5%
|
|
| 7 | 20 |
14.2%
|
|
| 8 | 26 |
18.4%
|
|
| 9 | 15 |
10.6%
|
|
| 10 | Very effective | 16 |
11.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 138 |