| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of epidemiology pdf | 1.98 | 0.4 | 1201 | 51 | 27 |
| history | 1.02 | 0.9 | 9355 | 58 | 7 |
| of | 0.19 | 1 | 8036 | 72 | 2 |
| epidemiology | 1.88 | 0.9 | 5918 | 40 | 12 |
| 1.9 | 0.8 | 5480 | 78 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of epidemiology pdf | 0.86 | 0.9 | 9188 | 90 |
