Data extraction and synthesis: the steps following study selection in a systematic review

Abstract

This article is the fifth in a series on the systematic review from the Joanna Briggs Institute, an international collaborative supporting evidence-based practice in nursing, medicine, and allied health fields. The purpose of the series is to describe how to conduct a systematic review—one step at a time. This article details the data extraction and data synthesis stages, with an emphasis on conducting a meta-analysis of quantitative data.