Bar Plot from Scientific Research

Bar plots on the methods planned in the protocol to evaluate transitivity among systematic reviews published before and after the PRISMA-NMA statement: 44 systematic reviews before and 130 after PRISMA-NMA planned at least one method for transitivity or statistical heterogeneity assessment. A systematic review may have planned more than one method. Dark blue refers to direct and indirect methods used exclusively for transitivity assessment. Light blue refers to indirect methods used exclusively to investigate sources of statistical heterogeneity.

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