| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| definition of a case control study | 1.77 | 0.4 | 8943 | 27 | 34 |
| definition | 1.45 | 0.3 | 7627 | 43 | 10 |
| of | 1.36 | 0.1 | 5100 | 88 | 2 |
| a | 1.14 | 0.9 | 883 | 66 | 1 |
| case | 0.37 | 0.5 | 5751 | 34 | 4 |
| control | 0.73 | 0.4 | 3664 | 87 | 7 |
| study | 0.51 | 0.9 | 799 | 93 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| definition of a case control study | 0.06 | 0.5 | 7742 | 64 |
