The PRISMA-NMA checklist is the reporting standard that journals expect when a systematic review includes a network meta-analysis. Hutton and colleagues published it in 2015 as an extension to the original PRISMA statement, and it runs to 32 items [1]. Twenty-seven of them are the familiar PRISMA items with wording adapted to networks of treatments, and five are new items about the geometry of the…
Almost every researcher who reaches the synthesis stage asks the same question, usually in a panic, usually at 11pm. You have screened a few thousand records, you have five studies left, and you want to know whether that is enough. The honest answer to the minimum number of studies for meta-analysis is two, and that answer is almost useless on its own. Two studies clear…
Meta-analysis mistakes are the quiet reason many pooled analyses get desk-rejected or, worse, published and later contradicted. A meta-analysis promises the highest tier of evidence, yet the same technical slips appear again and again across specialties, from a fixed-effect model forced onto heterogeneous trials to a funnel plot read like a horoscope. This guide walks through the twelve errors we see most often at Editverse…
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