01 Incidence & Prevalence.pptx - Epidemiology DR...

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Epidemiology DR. SRINIVAS MEDAVARAPU
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Epidemiology Epidemiology is the study of the distribution and determinants of health-related states (issues) within a population. Epidemiology sees disease as distributed within a group, not as a property of an individual. The tools of epidemiology are numbers. Numbers in epidemiology are ratios converted into rates. Def.: “Epidemiology is the study of the distribution and determinants of health-related states (issues) within a population”
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Qn Example: Incidence of breast cancer in a city (Dominica) in 2012? Ans : Numerator/Denominator ?
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In Exams (boards) will evaluate your ability to understand the concepts of epidemiology. They concentrate only on –the concepts and interpretations. they doesn’t evaluate your calculating powers/mathematics.
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Incidence
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Incidence Incidence Rate : the rate at which new events occur in a population. (Number of new events in a specified period) The numerator is the number of NEW events that occur in a defined period.
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