Meta-analysis is a statistical method to combine the results of epidemiological studies in order to increase power. Basically, it produces a weighted average of the included studies results. The goal of MetaXL is twofold. The first is to make high quality meta-analysis methods easily accessible for people without access to statistical packages such as Stata™ or SAS™, or to commercial specialized software such as MIX™ or Comprehensive Meta-analysis™. The second is to make available and promote the use of the quality effects model as an alternative to the random effects model
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