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Bone Marrow Transplant. 2013 Mar;48(3):452-8. doi: 10.1038/bmt.2012.244. Epub 2012 Dec 3.

Investigation of the freely available easy-to-use software 'EZR' for medical statistics.

Author information

1
Division of Hematology, Saitama Medical Center, Jichi Medical University, Saitama, Japan. ycanda-tky@umin.ac.jp

Abstract

Although there are many commercially available statistical software packages, only a few implement a competing risk analysis or a proportional hazards regression model with time-dependent covariates, which are necessary in studies on hematopoietic SCT. In addition, most packages are not clinician friendly, as they require that commands be written based on statistical languages. This report describes the statistical software 'EZR' (Easy R), which is based on R and R commander. EZR enables 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, receiver operating characteristics analyses, meta-analyses, sample size calculation and so on, by point-and-click access. EZR is freely available on our website (http://www.jichi.ac.jp/saitama-sct/SaitamaHP.files/statmed.html) and runs on both Windows (Microsoft Corporation, USA) and Mac OS X (Apple, USA). This report provides instructions for the installation and operation of EZR.

PMID:
23208313
PMCID:
PMC3590441
DOI:
10.1038/bmt.2012.244
[Indexed for MEDLINE]
Free PMC Article

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