| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.3%
|
|
| 3 | 2 |
0.6%
|
|
| 4 | 12 |
3.4%
|
|
| 5 | 41 |
11.6%
|
|
| 6 | 76 |
21.5%
|
|
| 7 | 74 |
20.9%
|
|
| 8 | 62 |
17.5%
|
|
| 9 | 53 |
15%
|
|
| 10 | Very effective | 33 |
9.3%
|
| 11 | Don't know | 46 | |
| Sysmiss | 23 |