Meta-Analysis of Medians.
metamedian: Meta-Analysis of Medians
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:
- Hozo et al. (2005)
- Wan et al. (2014)
- Bland (2015)
- Luo et al. (2018)
- Shi et al. (2020a)
- Shi et al. (2020b)
- McGrath et al. (2020b)
- Cai et al. (2021)
- Yang et al. (2022)
- McGrath et al. (2023)
- Shi et al. (2023)
Installation
You can install the released version of metamedian
from CRAN with:
install.packages("metamedian")
After installing the devtools
package (i.e., calling install.packages(devtools)
), the development version of metamedian
can be installed from GitHub with:
devtools::install_github("stmcg/metamedian")
Usage
See McGrath et al. (in press) for a detailed guide on using the metamedian
package.