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The CDC Field Epidemiology Manual$
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Sonja A. Rasmussen and Richard A. Goodman

Print publication date: 2019

Print ISBN-13: 9780190933692

Published to Oxford Scholarship Online: August 2019

DOI: 10.1093/oso/9780190933692.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 11 December 2019

Designing and Conducting Analytic Studies in the Field

Designing and Conducting Analytic Studies in the Field

Chapter:
(p.135) 7 Designing and Conducting Analytic Studies in the Field
Source:
The CDC Field Epidemiology Manual
Author(s):

Brendan R. Jackson

Patricia M. Griffin

Publisher:
Oxford University Press
DOI:10.1093/oso/9780190933692.003.0007

Analytic studies enable the field epidemiologist to test his or her hypotheses about the source of an outbreak or other health problem. This testing is performed by comparing ill persons’ exposures to those of a comparison group, typically using one of three study types. Cohort studies are used in field investigations when the population affected is well defined and not so large as to preclude collecting data on almost all persons. Case–control studies are commonly used in field investigations because they enable investigators to test multiple hypotheses relatively quickly and inexpensively. Case–case studies, in which the comparison group comprises other patients with the same or similar illness who do not meet the case definition also can be used to rapidly test hypotheses. Although field investigations may be conducted under intense scrutiny and time pressure, be sure to take time to develop hypotheses and carefully design any study.

Keywords:   case–control study, case–case study, cohort study, analytic studies, hypotheses, study design

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