21. Meta-Analysis

  1. Michael J. Crawley

Published Online: 6 NOV 2012

DOI: 10.1002/9781118448908.ch21

The R Book, Second Edition

The R Book, Second Edition

How to Cite

Crawley, M. J. (2012) Meta-Analysis, in The R Book, Second Edition, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781118448908.ch21

Author Information

  1. Imperial College London at Silwood Park, UK

Publication History

  1. Published Online: 6 NOV 2012
  2. Published Print: 7 DEC 2012

ISBN Information

Print ISBN: 9780470973929

Online ISBN: 9781118448908



  • meta-analysis;
  • meta-analysis, systematic review of a body of evidence;
  • extracting effect size, variance of that effect, and replication;
  • meta-analysis of studies, for introduction of any scientific paper;
  • precise studies, accorded higher weights;
  • fixed versus random effects;
  • fixed-effect meta-analysis of scaled differences;
  • random effects with a scaled mean difference;
  • random-effects meta-analysis of binary data


This chapter contains sections titled:

  • Effect size

  • Weights

  • Fixed versus random effects

  • Random-effects meta-analysis of binary data