| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 5 | 5 |
5.1%
|
|
| 6 | 6 |
6.1%
|
|
| 7 | 24 |
24.2%
|
|
| 8 | 35 |
35.4%
|
|
| 9 | 14 |
14.1%
|
|
| 10 | Very effective | 15 |
15.2%
|
| -99 | 3 | ||
| 11 | Don't know | 48 | |
| Sysmiss | 7 |