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Updated: May 25, 2025

Monitoring Influenza Virus Survival Outside the Host Using Real-Time Cell Analysis
Published on: February 20, 2021
Sequential monitoring using the Second Generation P-Value with Type I error controlled by monitoring frequency
Jonathan J Chipman1, Robert A Greevy2, Lindsay Mayberry3
1Division of Biostatistics, Department of Population Health Sciences, University of Utah, Cancer Biostatistics, Huntsman Cancer Institute, University of Utah.
Abstract:
The Second Generation P-Value (SGPV) measures the overlap between an estimated interval and a composite hypothesis of parameter values. We develop a sequential monitoring scheme of the SGPV (SeqSGPV) to connect study design intentions with end-of-study inference anchored on scientific relevance. We build upon Freedman's "Region of Equivalence" (ROE) in specifying scientifically meaningful hypotheses called Pre-specified Regions Indicating Scientific Merit (PRISM). We compare PRISM monitoring versus monitoring alternative ROE specifications. Error rates are controlled through the PRISM's indifference zone around the point null and monitoring frequency strategies. Because the former is fixed due to scientific relevance, the latter is a targettable means for designing studies with desirable operating characters. An affirmation step to stopping rules improves frequency properties including the error rate, the risk of reversing conclusions under delayed outcomes, and bias.
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