Epidemiology is the study of disease states in populations
In the applied sense, the 2x2 table does a lot of "heavy lifting" in epidemiology. The 2x2 table is used to calculate epidemiological measures like odds ratios, prevalence, relative risk, incidence, control event rate, experimental event rate, absolute risk reduction, absolute risk increase, number needed to treat, and number needed to harm.
Calculations used in epidemiology
Downloads for epidemiology
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