Statistical analysis using freely-available “EZR (Easy R)” software

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Other Title
  • フリー統計ソフトEZR (Easy R)による統計解析
  • フリー トウケイ ソフト EZR (Easy R)ニ ヨル トウケイ カイセキ

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Clinicians must often perform statistical analyses for purposes such evaluating preexisting evidence and designing or executing clinical studies. R is a free software environment for statistical computing. R supports many statistical analysis functions, but does not incorporate a statistical graphical user interface (GUI). The R commander provides an easy-to-use basic-statistics GUI for R. However, the statistical function of the R commander is limited, especially in the field of biostatistics. Therefore, the author added several important statistical functions to the R commander and named it “EZR (Easy R)”, which is now being distributed on the following website: http://www.jichi.ac.jp/saitama-sct/. EZR allows the application of statistical functions that are frequently used in clinical studies, such as survival analyses, including competing risk analyses and the use of time-dependent covariates and so on, by point-and-click access. In addition, by saving the script automatically created by EZR, users can learn R script writing, maintain the traceability of the analysis, and assure that the statistical process is overseen by a supervisor.

Journal

  • Rinsho Ketsueki

    Rinsho Ketsueki 56 (10), 2258-2266, 2015

    The Japanese Society of Hematology

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