| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
0.7%
|
| 2 | 11 |
2.1%
|
|
| 3 | 40 |
7.5%
|
|
| 4 | 89 |
16.7%
|
|
| 5 | 114 |
21.3%
|
|
| 6 | 102 |
19.1%
|
|
| 7 | 77 |
14.4%
|
|
| 8 | 75 |
14%
|
|
| 9 | 19 |
3.6%
|
|
| 10 | Very effective | 3 |
0.6%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 29 |