Within-Group Standard Deviation for Matched Groups
Computes the within-group standard deviation for matched groups. This within-group standard deviation can be used to calculate standardized mean differences for matched groups. This method requires a correlation coefficient r.
Within Study Result
Result
Function References
Borenstein, M., Hedges, L.V., Higgins, J.P.T. and Rothstein, H.R. (2009). Effect Sizes Based on Means . In Introduction to Meta-Analysis (eds M. Borenstein, L.V. Hedges, J.P.T. Higgins and H.R. Rothstein). https://doi.org/10.1002/9780470743386.ch4
How to Cite
Emprechtinger, R., Schwarzer, G., Tölch, U., Schreder, G., & Gartlehner, G. (2025). Assessing the effectiveness of metaHelper: A randomized controlled trial of a web application and R package to streamline statistical transformations in meta-analysis. Journal of Clinical Epidemiology, 179, 111640. https://doi.org/10.1016/j.jclinepi.2024.111640