3 citations · 5 across the 5 of their papers we have counts for
7 papers
The Cost of Sequential Adaptation and the Lower Bound for Mean Squared Error
Sergey Tarima, Nancy Flournoy
Informative interim adaptations lead to random sample sizes. The random sample size becomes a component of the sufficient statistic and estimation based solely on observed samples…
Coping with Information Loss and the Use of Auxiliary Sources of Data: A Report from the NISS Ingram Olkin Forum Series on Unplanned Clinical Trial Disruptions
Silvia Calderazzo, Sergey Tarima, Carissa Reid +9
Clinical trials disruption has always represented a non negligible part of the ending of interventional studies. While the SARS-CoV-2 (COVID-19) pandemic has led to an impressive a…
Estimands and their Estimators for Clinical Trials Impacted by the COVID-19 Pandemic: A Report from the NISS Ingram Olkin Forum Series on Unplanned Clinical Trial Disruptions
Kelly Van Lancker, Sergey Tarima, Jonathan Bartlett +8
The COVID-19 pandemic continues to affect the conduct of clinical trials globally. Complications may arise from pandemic-related operational challenges such as site closures, trave…
Most Powerful Test Sequences with Early Stopping Options
Sergey Tarima, Nancy Flournoy
Sequential likelihood ratio testing is found to be most powerful in sequential studies with early stopping rules when grouped data come from the one-parameter exponential family. F…
Use of Uncertain Additional Information in Newsvendor Models
Sergey Tarima, Zhanna Zenkova
The newsvendor problem is a popular inventory management problem in supply chain management and logistics. Solutions to the newsvendor problem determine optimal inventory levels. T…
Effect of Interim Adaptations in Group Sequential Designs
Sergey Tarima, Nancy Flournoy
This manuscript investigates unconditional and conditional-on-stopping maximum likelihood estimators (MLEs), information measures and information loss associated with conditioning…