| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| case control observational study | 1.07 | 0.4 | 4325 | 54 | 32 |
| case | 1.8 | 0.1 | 9133 | 62 | 4 |
| control | 1.7 | 0.5 | 2935 | 99 | 7 |
| observational | 1.48 | 0.8 | 5491 | 53 | 13 |
| study | 1.27 | 0.2 | 7089 | 88 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| case control observational study | 0.13 | 0.8 | 8144 | 70 |
| observational study case control study | 1.42 | 0.1 | 8804 | 86 |
| what is a case control observational study | 1.31 | 0.6 | 6951 | 30 |
| case control vs observational study | 1.93 | 0.5 | 4618 | 70 |
