| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.3%
|
| 2 | 9 |
6.8%
|
|
| 3 | 12 |
9%
|
|
| 4 | 17 |
12.8%
|
|
| 5 | 16 |
12%
|
|
| 6 | 15 |
11.3%
|
|
| 7 | 8 |
6%
|
|
| 8 | 19 |
14.3%
|
|
| 9 | 6 |
4.5%
|
|
| 10 | Very effective | 24 |
18%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 124 |