"CMA is a very useful and friendly software that has being used both as an auxiliary tool for my papers preparation, and as the program elected for the analysis that I usually do with my students in order to train them in this field of meta‐analysis. In brief, this is a very well‐conceived statistical analysis software, useful for trainees in statistical analysis as well as for senior researchers."

J. Marques‐Teixeira, MD, PhD - Psychiatrist and Psychotherapist, Aggregate Professor, University of Porto, Clinical Director of Neurobios ‐ Neurosciences Institute

"We had no knowledge on meta‐analyses and were somewhat confused by the number of programs available. Most of them were not easy to use, not insightful and required a priori knowledge of metaanalyses statistics. There was one exception: Comprehensive Meta‐analysis. We downloaded the software and went through the easy‐to‐use tutorial. Within an hour we were performing our own metaanalysis! Our analysis was verified by our statistical department with excellent results, giving us further confidence to continue our analysis and resulting in an excellent paper in the top journal on pain research: Niesters et al., Do Sex Differences Exist in Opioid Analgesia? A Systematic Review and Meta‐ Analysis of Human Experimental and Clinical Studies. Pain, 2010, in press, doi:10.1016/j.pain.2010.06.012."

Albert Dahan, MD, PhD & Marieke Niesters, MD, MSc - Department of Anesthesiology, Leiden University Medical Center, Leiden, The Netherlands