Cancer epidemiologists use various study designs to answer research questions: * Cohort Studies: These involve following a group of people over time to see who develops cancer and what factors might be associated with its onset. * Case-Control Studies: These compare people with cancer (cases) to those without (controls) to identify factors that might have contributed to the disease. * Cross-Sectional Studies: These examine a population at a single point in time to identify the prevalence of cancer and associated risk factors. * Randomized Controlled Trials: These are often used to test the effectiveness of new interventions or treatments.
