| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1%
|
| 2 | 2 |
1%
|
|
| 3 | 6 |
3.1%
|
|
| 4 | 6 |
3.1%
|
|
| 5 | 24 |
12.4%
|
|
| 6 | 28 |
14.5%
|
|
| 7 | 35 |
18.1%
|
|
| 8 | 35 |
18.1%
|
|
| 9 | 22 |
11.4%
|
|
| 10 | Very effective | 33 |
17.1%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 162 |