| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
5.7%
|
| 2 | 4 |
5.7%
|
|
| 3 | 7 |
10%
|
|
| 4 | 13 |
18.6%
|
|
| 5 | 12 |
17.1%
|
|
| 6 | 11 |
15.7%
|
|
| 7 | 9 |
12.9%
|
|
| 8 | 4 |
5.7%
|
|
| 9 | 5 |
7.1%
|
|
| 10 | Very effective | 1 |
1.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 78 |