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流行病学设计
Epidemiologic Study Design
Takesumi Yoshimura, MD, PhD, MPH
Fukuoka Women’s University
(Prof. Emeritus at UOEH)
tak-yoshi@fwu.ac.jp
Today’s Topic
1.What is an epidemiology?
2. Epidemiologic study types
3. Example : Yusho
Epidemiology
Distribution
Determinants
What can epidemiology do?
1.What is the fact? - Distribution
(descriptive epidemiology)
2.What is the reason for the distribution?
(Hypothesis formulation)
3.Is the hypothesis true? - Hypothesis testing
(analytical epidemiology, intervention study)
4.Is the countermeasure effective? - Evaluation
(analytical epidemiology, intervention study)
5
Epidemiologic study cycles
Descriptive epidemiology
(data collection analysis)
Analysis of results suggests Formulation of
further epidemiologic studies Hypothesis
Analytical epidemiology
(hypothesis testing)
6
Today’s Topic
1. What is an epidemiology?
1. Epidemiologic study types
2. Example : Yusho
Epidemiological Methods (Population based)
Observation Intervention
Ecological Study Community Intervention Study
Epidemiological Methods (Individual based)
Observational Epidemiology Intervention Study
Cross Sectional Longitudinal Study longitudinal study
Study
target population
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