Presentation on theme: "Part 1 DESCRIPTIVE EPIDEMIOLOGY 1. Objectives Describe the components of descriptive epidemiology Describe the uses and importance of descriptive epidemiology."— Presentation transcript:
Objectives Describe the components of descriptive epidemiology Describe the uses and importance of descriptive epidemiology Describe what tables, graphs, and charts might be used to present descriptive epidemiology to an audience or decision-makers
Epidemiology Basic science of public health Data-driven –Systematic collection, analysis and interpretation of data Distribution and determinants of health-related states or events Application to the control of health problems 3
What is Descriptive Epidemiology? Portrays the pattern of disease occurrence in terms of –(Clinical features) –Time –Place –Person Defines the relationship of disease occurrence to the population at risk
…Distribution… What Who Where When Why / How =Clinical =Person =Place =Time =Cause, Risk factors, modes of transmission Descriptive Epidemiology (Distribution) or
Clinical Features Symptoms Signs Laboratory findings Hospitalization Death
Typical Descriptive Epi Table Example 1 Ortiz, Katz, Mahmoud, et al. J Infect Dis 2007;196:1685-1691
Typical Descriptive Epi Table Example 2 Lee et al. J Infect Dis 2009;200:492-500.
Why is it Important to Perform Descriptive Epi? Describe clinical characteristics of the illness Describe demographic characteristics of those affected Identify or infer population at risk Provide clues to etiology, modes of transmission Guide interventions
Summary Epidemiology is the study of the distribution and determinants of health-related states or events in specified human populations and its application to the control of health problems Descriptive epidemiology (time, place, person, clinical) is an essential part of epidemiology, particularly but not limited to field epidemiology The basic approach to field investigations is count, divide (calculate proportions or rates), compare to identify high risk groups, risk factors, and causes so action can be taken
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