unit 2 pt 1 - Definitions of Epidemiology Measures of...

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Measures of Morbidity and Mortality Part 1 Dr. H. Stockwell Definitions of Epidemiology The study of the distribution , determinants and deterrents of and of morbidity and mortality in human populations. (Oleckno) Numerators and denominators and The Numerator: What is Health and Disease How do we define “health”? - WHO: physical, mental and social well-being Problems with definition of health from an epidemiologic /research perspective? - Must define health or lack thereof in quantifiable terms, usually measure disease quantifiable terms, usually measure disease (morbidity and mortality) How do you define a disease? Changes in Disease definitions Definitions change as more is learned about disease and better tests about disease and better tests developed to measure the disease Changing disease definitions source: Aschengrau and Seage The Denominator: Definition of a population What is a “population”? Group of people with a common characteristic(s) H d fi l i ? How can we define populations? Residence, catchment area, common event (disease etc) occupation etc (disease etc), occupation etc Why do we need to know? Determine who is at risk of disease
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