| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.5%
|
| 2 | 2 |
1.3%
|
|
| 3 | 3 |
1.9%
|
|
| 4 | 10 |
6.3%
|
|
| 5 | 29 |
18.4%
|
|
| 6 | 35 |
22.2%
|
|
| 7 | 23 |
14.6%
|
|
| 8 | 33 |
20.9%
|
|
| 9 | 10 |
6.3%
|
|
| 10 | Very effective | 9 |
5.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 92 |