Epidemiology is the science of public health and population health. Which statement is true?

• A. True
• B. False
• C. A subset of clinical medicine
• D. A field unrelated to health

Answer: (A)

Epidemiology focuses on how health and disease are distributed in populations and what factors influence that distribution, with the goal of preventing disease and promoting health across communities. This population focus underpins public health and population health, so the statement is true. It isn’t just a subset of clinical medicine; it draws on community data, surveillance, study designs, and biostatistics to inform prevention and policy, extending beyond individual patient care. It is clearly related to health, since its purpose is to understand and improve health outcomes at the population level.