| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
6.6%
|
| 2 | 4 |
2.6%
|
|
| 3 | 10 |
6.6%
|
|
| 4 | 12 |
7.9%
|
|
| 5 | 23 |
15.2%
|
|
| 6 | 13 |
8.6%
|
|
| 7 | 20 |
13.2%
|
|
| 8 | 24 |
15.9%
|
|
| 9 | 15 |
9.9%
|
|
| 10 | Very effective | 20 |
13.2%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 106 |