| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
7.3%
|
| 2 | 3 |
1.7%
|
|
| 3 | 7 |
4%
|
|
| 4 | 17 |
9.6%
|
|
| 5 | 23 |
13%
|
|
| 6 | 19 |
10.7%
|
|
| 7 | 17 |
9.6%
|
|
| 8 | 24 |
13.6%
|
|
| 9 | 19 |
10.7%
|
|
| 10 | Very effective | 35 |
19.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 80 |