| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| observational study sample size | 1.36 | 0.2 | 5875 | 96 | 31 |
| observational | 0.44 | 0.2 | 2245 | 30 | 13 |
| study | 0.75 | 0.8 | 1078 | 86 | 5 |
| sample | 1.42 | 0.6 | 9904 | 63 | 6 |
| size | 1.31 | 0.5 | 2225 | 86 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| observational study sample size | 0.43 | 0.6 | 8429 | 62 |
