Defining a target population involves several steps: 1. Identify the Health Issue: Understand the health problem or condition being studied. 2. Determine the Characteristics: Specify the demographic, geographic, and clinical characteristics of the population. 3. Assess the Sample Size: Determine the number of individuals needed to achieve reliable and valid results. 4. Consider Accessibility: Ensure that the target population can be reached for data collection and follow-up.
