Users' Guides to the Medical Literature
Guyatt G, Rennie D, Meade MO, Cook DJ
Part F Summarizing the Evidence
Chapter 20.1. Reporting Bias
Victor Montori, John Ioannidis, Gordon Guyatt
Reporting Bias: Introduction
Topics Discussed:
bias (conflict of interest), bias, epidemiologic, conduct considerations, reporting bias, systematic reviews
Excerpt:
"A systematic review follows a protocol
describing the scope of the researcher's question, inclusion
and exclusion criteria for primary studies,
a search strategy, data extraction, quality assessment procedures,
and data analysis. Systematic error can intrude
at any of these steps. Perhaps the most difficult types of bias for reviewers to overcome relates
to authors' inclination to publish material, either entire studies
or specific outcomes, based on the magnitude,
direction, or statistical significance of
the results. We call the systematic error in the body of evidence
that results from this inclination reporting bias...."
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