| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.7%
|
| 2 | 3 |
1%
|
|
| 3 | 7 |
2.4%
|
|
| 4 | 4 |
1.4%
|
|
| 5 | 12 |
4.2%
|
|
| 6 | 7 |
2.4%
|
|
| 7 | 29 |
10%
|
|
| 8 | 44 |
15.2%
|
|
| 9 | 42 |
14.5%
|
|
| 10 | Very effective | 63 |
21.8%
|
| 11 | Don't know | 73 |
25.3%
|
| Sysmiss | 149 |