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Epidemiology by DesignA Causal Approach to the Health Sciences$
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Daniel Westreich

Print publication date: 2019

Print ISBN-13: 9780190665760

Published to Oxford Scholarship Online: December 2019

DOI: 10.1093/oso/9780190665760.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 28 October 2021

Measuring Disease

Measuring Disease

Chapter:
(p.7) 1 Measuring Disease
Source:
Epidemiology by Design
Author(s):

Daniel Westreich

Publisher:
Oxford University Press
DOI:10.1093/oso/9780190665760.003.0002

The first task of epidemiology is to understand in some depth the concepts of prevalence and incidence, how to quantify them, and key types of error that can affect the measurements of each. In Chapter 1, the author describes prevalence and incidence in single samples (a single population), as well as how to quantify these measures. The chapter will focus on the survival curve as the central measure of incidence of disease over time in a population and then describe how simpler measures such as the incidence proportion (that is, the risk), incidence rate, incidence odds, and measures of time can be derived from the survival curve.

Keywords:   prevalence, incidence, survival curves, risks, incidence rates, odds, time-to-event, incidence proportion

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