| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| ecological study in epidemiology | 1.27 | 0.2 | 153 | 34 | 32 |
| ecological | 0.3 | 0.3 | 6680 | 85 | 10 |
| study | 0.55 | 0.8 | 1871 | 95 | 5 |
| in | 1.19 | 0.6 | 6172 | 11 | 2 |
| epidemiology | 1.68 | 0.3 | 5375 | 57 | 12 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| ecological study in epidemiology | 1.45 | 0.7 | 4466 | 41 |
