"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

"Comprehensive Meta‐Analysis is, literally speaking, the most comprehensive and user friendly metaanalysis “package” program. It excellently accommodates both advanced and beginning users’ needs at the same time and different levels of needs over time. Among numerous laudable features, this package program provides the most comprehensive and advanced solution for testing publication bias. Using Excel‐like interfaces, moderator analyses are very easy to do! It would be a great loss for any competent researcher and practitioner to overlook this impressive package program."

In‐Sue Oh, PhD - Department of Management, Virginia Commonwealth University