| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
0.8%
|
| 2 | 11 |
2.1%
|
|
| 3 | 29 |
5.5%
|
|
| 4 | 66 |
12.5%
|
|
| 5 | 112 |
21.2%
|
|
| 6 | 125 |
23.6%
|
|
| 7 | 77 |
14.6%
|
|
| 8 | 69 |
13%
|
|
| 9 | 27 |
5.1%
|
|
| 10 | Very effective | 9 |
1.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 34 |