Unit 3 pt 1 - Descriptive Epidemiology Descriptive Epidemiology Part 1 Dr H Stockwell Basic assumptions of epidemiology Human disease does not

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Unformatted text preview: Descriptive Epidemiology Descriptive Epidemiology Part 1 Dr. H. Stockwell Basic assumptions of epidemiology ¡ Human disease does not occur at random ¡ Causal and preventive factors can be identified through systematic investigation of different populations or subgroups of individuals in a population in different places or times Epidemiology ¡ Divided in to two major components: Descriptive Epidemiology Analytic Epidemiology (hypothesis testing) ¡ Both important to our understanding of disease ¡ Cannot ask relevant questions about disease etiology without a firm understanding of the descriptive epidemiology Descriptive Epidemiology ¡ Designed to describe the existing distribution of variables without regard to causal associations associations ¡ measure prevalence and incidence of disease/health ¡ Generate hypotheses for analytic studies CANNOT TEST HYPOTHESES USING DESCRIPTIVE STUDIES Descriptive Epidemiology Time WHEN WHO WHERE Distribution of disease: Descriptive Epidemiology ¡ Person : age, sex, race/ethnicity, SES, occupation, lifestyle occupation, lifestyle ¡ Place : neighborhood, state, country, environment Time : date of exposure date of ¡ Time : date of exposure, date of diagnosis etc Person ¡ Who gets disease? Characteristics of person -- ex: gender and age Death rates (DR) per 100,000 population from coronary disease in the U.S.,1981, by age and gender Age White men White women DR men/women 25-34 9.4 4.2 2.2 35-44 60.6 16.2 3.7 45-54 265.6 71.2 3.7 55 64 708 7 243 7 2 9 55-64 708.7 243.7 2.9 65-74 1669.9 769.4 2.2 75-84 3751.5 2359.0 1.6 75 84 3751.5 2359.0 1.6 85+ 8596.0 7215.1 1.2 Race and Ethnicity in Epidemiologic Research ¡ Often used variables in research – frequently used to assess the association of these variables on disease outcomes ¡ Biologically race is ill defined, poorly understood and may be of questionable validity Race has been described as an arbitrary system of visual ¡ Race has been described as an arbitrary system of visual classification (Fullilove, MT, 1998) ¡ DNA evidence indicates genetic diversity is a continuum with no clear breaks that delineate racial groups ¡ Since 2000 census individuals can self identify with more than one racial group than one racial group From Gordis L 3 rd ed. NO AUDIO ON THIS SLIDE. CLICK NEXT TO CONTINUE....
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This note was uploaded on 07/15/2011 for the course PHC 6000 taught by Professor Staff during the Summer '08 term at University of South Florida - Tampa.

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Unit 3 pt 1 - Descriptive Epidemiology Descriptive Epidemiology Part 1 Dr H Stockwell Basic assumptions of epidemiology Human disease does not

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