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The metamedian package implements several methods to meta-analyze studies that report the sample median of the outcome. When the primary studies are one-group studies, the methods of McGrath et al. (2019) and Ozturk and Balakrishnan (2020) can be applied to estimate the pooled median. In the two-group context, the methods of McGrath et al. (2020a) can be applied to estimate the pooled difference of medians across groups.
Additionally, this package implements a number of methods to estimate the study-specific means and their standard errors from studies reporting sample medians in order to estimate the pooled (difference of) means. Specifically, one can apply the following methods in this context:
You can install the released version of metamedian from CRAN with:
After installing the devtools package (i.e., calling install.packages(devtools)), the development version of metamedian can be installed from GitHub with:
See McGrath et al. (in press) for a detailed guide on using the metamedian package.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.