| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.6%
|
| 3 | 4 |
3.2%
|
|
| 4 | 4 |
3.2%
|
|
| 5 | 14 |
11.1%
|
|
| 6 | 19 |
15.1%
|
|
| 7 | 20 |
15.9%
|
|
| 8 | 32 |
25.4%
|
|
| 9 | 21 |
16.7%
|
|
| 10 | Very effective | 10 |
7.9%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 18 |