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Critical Appraisal of Epidemiological Studies and Clinical Trials$
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Mark Elwood

Print publication date: 2007

Print ISBN-13: 9780198529552

Published to Oxford Scholarship Online: September 2009

DOI: 10.1093/acprof:oso/9780198529552.001.0001

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Critical appraisal of a prospective cohort study

Chapter:
(p.409) Chapter 12 Critical appraisal of a prospective cohort study
Source:
Critical Appraisal of Epidemiological Studies and Clinical Trials
Author(s):

J. Mark Elwood

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198529552.003.12

This chapter presents an example of the application of the scheme for critical appraisal: a prospective cohort study entitled ‘Long-term relation between breastfeeding and development of atopy and asthma in children and young adults: a longitudinal study’, published in The Lancet, in 2002. Working through this, critical appraisal shows that this is a substantial and carefully performed prospective cohort study, in which the information on outcome, asthma at the age of nine years, is very clear, and the information on breastfeeding is almost equally clear.

Keywords:   cohort studies, causal relationships, breastfeeding, atopy, asthma

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