| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.3%
|
| 2 | 5 |
5.8%
|
|
| 3 | 1 |
1.2%
|
|
| 4 | 2 |
2.3%
|
|
| 5 | 1 |
1.2%
|
|
| 6 | 6 |
7%
|
|
| 7 | 13 |
15.1%
|
|
| 8 | 18 |
20.9%
|
|
| 9 | 24 |
27.9%
|
|
| 10 | Very effective | 14 |
16.3%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 78 |