| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.9%
|
| 2 | 3 |
1.9%
|
|
| 3 | 4 |
2.5%
|
|
| 4 | 14 |
8.8%
|
|
| 5 | 26 |
16.3%
|
|
| 6 | 26 |
16.3%
|
|
| 7 | 25 |
15.6%
|
|
| 8 | 32 |
20%
|
|
| 9 | 16 |
10%
|
|
| 10 | Very effective | 11 |
6.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 90 |