| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
3.2%
|
| 2 | 9 |
3.6%
|
|
| 3 | 9 |
3.6%
|
|
| 4 | 20 |
8.1%
|
|
| 5 | 31 |
12.5%
|
|
| 6 | 36 |
14.5%
|
|
| 7 | 52 |
21%
|
|
| 8 | 45 |
18.1%
|
|
| 9 | 23 |
9.3%
|
|
| 10 | Very effective | 15 |
6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 192 |