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Pooling data that are reported inconsistently

Meta-analysis relies on the pooling of data from across studies. This can be a pain because study reports are not usually written with the intention of having their results pooled with other studies. Reports of meta-analyses are sometimes even worse

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Random and fixed effect models

In meta-analysis, it is common to talk about random- and fixed-effect models. This can get pretty confusing, because fixed- and random-effects models exist outside meta-analysis as well. As a result, there is a short and a long answer to this

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Network meta-analysis

Meta-analysis is the statistical aggregation of data from a number of studies in order to answer a question. As an example, when considering the efficacy of a treatment, one may pool the results of multiple trials comparing the treatment to

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Meta-analysis

Meta-analysis is the statistical aggregation and analysis of data from multiple studies. When the studies included are properly selected and the data are aggregated appropriately, it uses more of the available information than a single study and so should be

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