| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.2%
|
| 2 | 8 |
5.1%
|
|
| 3 | 7 |
4.5%
|
|
| 4 | 6 |
3.8%
|
|
| 5 | 25 |
15.9%
|
|
| 6 | 20 |
12.7%
|
|
| 7 | 25 |
15.9%
|
|
| 8 | 29 |
18.5%
|
|
| 9 | 15 |
9.6%
|
|
| 10 | Very effective | 17 |
10.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 122 |