| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 4 | 17 |
4.6%
|
|
| 5 | 59 |
15.9%
|
|
| 6 | 68 |
18.3%
|
|
| 7 | 80 |
21.5%
|
|
| 8 | 64 |
17.2%
|
|
| 9 | 49 |
13.2%
|
|
| 10 | Very effective | 35 |
9.4%
|
| 11 | Don't know | 33 | |
| Sysmiss | 18 |