| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.7%
|
| 2 | 2 |
3.7%
|
|
| 4 | 1 |
1.9%
|
|
| 5 | 5 |
9.3%
|
|
| 6 | 11 |
20.4%
|
|
| 7 | 12 |
22.2%
|
|
| 8 | 9 |
16.7%
|
|
| 9 | 9 |
16.7%
|
|
| 10 | Very effective | 3 |
5.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 80 |