Assessing Risk of Bias in Included Studies

Abstract

This chapter contains sections titled: Introduction What is bias? Tools for assessing quality and risk of bias Introduction to sources of bias in clinical trials The Cochrane Collaboration's tool for assessing risk of bias Presentation of assessments of risk of bias Summary assessments of risk of bias Incorporating assessments into analyses Sequence generation Allocation sequence concealment Blinding of participants, personnel and outcome assessors Incomplete outcome data Selective outcome reporting Other potential threats to validity Chapter information References