| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 20 |
10.8%
|
| 2 | 11 |
5.9%
|
|
| 3 | 8 |
4.3%
|
|
| 4 | 11 |
5.9%
|
|
| 5 | 17 |
9.2%
|
|
| 6 | 26 |
14.1%
|
|
| 7 | 23 |
12.4%
|
|
| 8 | 19 |
10.3%
|
|
| 9 | 10 |
5.4%
|
|
| 10 | Very effective | 40 |
21.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 157 |