| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
1.8%
|
| 2 | 6 |
1.1%
|
|
| 3 | 12 |
2.2%
|
|
| 4 | 22 |
4.1%
|
|
| 5 | 70 |
12.9%
|
|
| 6 | 103 |
19%
|
|
| 7 | 86 |
15.9%
|
|
| 8 | 99 |
18.3%
|
|
| 9 | 70 |
12.9%
|
|
| 10 | Very effective | 63 |
11.6%
|
| 11 | Don't know | 124 | |
| Sysmiss | 54 |