Several methods are commonly used for grouping data in epidemiology:
Demographic Grouping: Grouping based on age, gender, race, and other demographic factors. Geographic Grouping: Categorizing data according to location, such as countries, states, or cities. Temporal Grouping: Organizing data by time periods, such as weeks, months, or years, to observe trends over time. Clinical Grouping: Grouping based on disease characteristics, such as severity, stage, or type of illness.
