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Random sampling is a probability sampling method in which every member of the defined population has a known and usually equal chance of being selected for inclusion in a study. It is an important method in public health and epidemiological research because it helps researchers obtain a sample that represents the target population and reduces selection bias. Random sampling is particularly useful when studying disease prevalence, risk factors, health behaviours, mortality, morbidity and the utilization of health services. In epidemiology, the population of interest may consist of all individuals living in a particular geographical area, _______ ________ ____ ______ _______ _____ ____ _____ __________ _____ ____ __________.
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