| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
2.2%
|
| 2 | 3 |
3.3%
|
|
| 3 | 2 |
2.2%
|
|
| 4 | 7 |
7.7%
|
|
| 5 | 13 |
14.3%
|
|
| 6 | 8 |
8.8%
|
|
| 7 | 15 |
16.5%
|
|
| 8 | 13 |
14.3%
|
|
| 9 | 17 |
18.7%
|
|
| 10 | Very effective | 11 |
12.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 75 |