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Design Concepts in Nutritional Epidemiology$
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Barrie M. Margetts and Michael Nelson

Print publication date: 1997

Print ISBN-13: 9780192627391

Published to Oxford Scholarship Online: September 2009

DOI: 10.1093/acprof:oso/9780192627391.001.0001

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1. Overview of the principles of nutritional epidemiology

1. Overview of the principles of nutritional epidemiology

(p.3) 1. Overview of the principles of nutritional epidemiology
Design Concepts in Nutritional Epidemiology

Barrie M. Margetts

Michael Nelson

Oxford University Press

This chapter sets out the basic principles of nutritional epidemiology as they apply to the study of relationships between diet, nutrition, and health outcomes. It describes the main types of epidemiological studies and their relationships, strengths, and weaknesses; the nature of epidemiological measurements; the relationships between diet and health at international, national, household, and individual level; concepts of validity, reproducibility, calibration, bias, and confounding; and distinguishes between bias, confounding, effect modification, and interaction. Finally, it covers interpretation of findings, systematic reviews and meta-analysis.

Keywords:   validity, reproducibility, confounding, bias, effect modification, systematic review, meta-analysis

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