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Biometrical Journal. Biometrische Zeitschrift|January 28, 2017
Improved standard error estimator for maintaining the validity of inference in cluster randomized trials with a small number of clustersWhitney P Ford, Philip M WestgateStatistics in Medicine|June 25, 2020
Maintaining the validity of inference in small-sample stepped wedge cluster randomized trials with binary outcomes when using generalized estimating equationsWhitney P Ford, Philip M WestgateStatistics in Medicine|August 4, 2018
A comparison of bias-corrected empirical covariance estimators with generalized estimating equations in small-sample longitudinal study settingsWhitney P Ford, Philip M WestgateBiometrical Journal. Biometrische Zeitschrift|July 16, 2013
On small-sample inference in group randomized trials with binary outcomes and cluster-level covariatesPhilip M WestgateBiometrical Journal. Biometrische Zeitschrift|January 17, 2014
Criterion for the simultaneous selection of a working correlation structure and either generalized estimating equations or the quadratic inference function approachPhilip M WestgateStatistics in Medicine|March 1, 2016
Intra-cluster correlation selection for cluster randomized trialsPhilip M WestgateClinical Trials (London, England)|October 9, 2018
A readily available improvement over method of moments for intra-cluster correlation estimation in the context of cluster randomized trials and fitting a GEE-type marginal model for binary outcomesPhilip M WestgateStatistics in Medicine|December 21, 2012
A bias correction for covariance estimators to improve inference with generalized estimating equations that use an unstructured correlation matrixPhilip M WestgateStatistics in Medicine|July 19, 2012
A bias-corrected covariance estimate for improved inference with quadratic inference functionsPhilip M WestgateStatistics in Medicine|February 8, 2014
Improving the correlation structure selection approach for generalized estimating equations and balanced longitudinal dataPhilip M WestgatePageof 13