| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.9%
|
| 2 | 1 |
1.4%
|
|
| 3 | 3 |
4.3%
|
|
| 4 | 10 |
14.5%
|
|
| 5 | 10 |
14.5%
|
|
| 6 | 14 |
20.3%
|
|
| 7 | 11 |
15.9%
|
|
| 8 | 10 |
14.5%
|
|
| 9 | 7 |
10.1%
|
|
| 10 | Very effective | 1 |
1.4%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 48 |