| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
2.3%
|
| 2 | 2 |
1.5%
|
|
| 3 | 9 |
6.9%
|
|
| 4 | 9 |
6.9%
|
|
| 5 | 17 |
13.1%
|
|
| 6 | 22 |
16.9%
|
|
| 7 | 31 |
23.8%
|
|
| 8 | 27 |
20.8%
|
|
| 9 | 4 |
3.1%
|
|
| 10 | Very effective | 6 |
4.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 18 |