Epidemiological studies are designed to test hypotheses and understand health-related events. Common study designs include:
Cohort Studies: Follow a group of people over time to assess the association between exposures and outcomes. Case-Control Studies: Compare individuals with a disease (cases) to those without (controls) to identify potential risk factors. Cross-Sectional Studies: Analyze data from a population at a single point in time to examine the relationship between diseases and other variables. Randomized Controlled Trials (RCTs): Assign participants randomly to receive either the intervention being tested or a placebo to evaluate the intervention's effectiveness.
