Power and sample size estimation are critical aspects of study design to demonstrate minimized risk for subjects and justify the allocation of time, money, and other resources. Researchers often work with response variables that take the form of various distributions. Here, we present an R package, PASSED, that allows flexibility with seven common distributions and multiple options to accommodate sample size or power analysis.
Bibliographical noteFunding Information:
The authors gratefully acknowledge Dr. Richard Madsen, Professor Emeritus of Statistics University of Missouri - Columbia, for his contribution and interest in this topic. Funding for this project was provided by NIH R34AR074209A (Co-I Leary) and the Thompson Laboratory for Regenerative Orthopaedics, University of Missouri - Columbia.
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