| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.5%
|
| 2 | 2 |
1.2%
|
|
| 3 | 9 |
5.6%
|
|
| 4 | 16 |
9.9%
|
|
| 5 | 15 |
9.3%
|
|
| 6 | 13 |
8%
|
|
| 7 | 26 |
16%
|
|
| 8 | 35 |
21.6%
|
|
| 9 | 20 |
12.3%
|
|
| 10 | Very effective | 22 |
13.6%
|
| 11 | Don't know | 200 | |
| Sysmiss | 59 |