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Systematic Reviews and Meta-Analysis$
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Julia H. Littell, Jacqueline Corcoran, and Vijayan Pillai

Print publication date: 2008

Print ISBN-13: 9780195326543

Published to Oxford Scholarship Online: January 2009

DOI: 10.1093/acprof:oso/9780195326543.001.0001

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Locating and Screening Studies

Locating and Screening Studies

Chapter:
(p.52) 3 Locating and Screening Studies
Source:
Systematic Reviews and Meta-Analysis
Author(s):

Julia H. Littell

Jacqueline Corcoran

Vijayan Pillai

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195326543.003.0003

A variety of sources and strategies are needed to locate studies that are relevant for a systematic review and/or meta-analysis. This chapter discusses procedures used to identify relevant studies, determines whether they are eligible for further review and meta-analysis, and documents the search and screening processes. In addition to keyword searches of bibliographic databases, systematic reviews may include hand-searching of key journals, reference harvesting from previous reviews, and special efforts to find eligible studies in the grey literature (unpublished and hard-to-find sources). Publication bias and other dissemination biases pose threats to the validity of systematic reviews and meta-analyses that do not conduct careful searches of the grey literature.

Keywords:   literature search, bibliographic databases, grey literature, publication bias

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