| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3.6%
|
| 2 | 1 |
1.8%
|
|
| 4 | 1 |
1.8%
|
|
| 5 | 2 |
3.6%
|
|
| 6 | 6 |
10.9%
|
|
| 7 | 6 |
10.9%
|
|
| 8 | 17 |
30.9%
|
|
| 9 | 15 |
27.3%
|
|
| 10 | Very effective | 5 |
9.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 109 |