| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
1.1%
|
| 2 | 6 |
1.1%
|
|
| 3 | 14 |
2.5%
|
|
| 4 | 28 |
5%
|
|
| 5 | 47 |
8.4%
|
|
| 6 | 92 |
16.4%
|
|
| 7 | 102 |
18.2%
|
|
| 8 | 121 |
21.6%
|
|
| 9 | 59 |
10.5%
|
|
| 10 | Very effective | 85 |
15.2%
|
| 11 | Don't know | 99 | |
| Sysmiss | 60 |