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Systematic review


A summary of the medical literature that uses explicit methods to perform a thorough literature search and critical appraisal of individual studies and that uses appropriate statistical techniques to combine these valid studies.

Systematic reviews are not all equal, and quality issues are important. Guidance for reviewing reviews is worth a read.

Anyone thinking about performing a systematic review would do worse than to read the simple practical guidance on how to do a Cochrane review by Frances Fairman and friends.

A downloadable essay is also available .