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Open access

Research article

First published 2021-11

Sample sizes for cluster-randomised trials with continuous outcomes: Accounting for uncertainty in a single intra-cluster correlation estimate

Jen Lewis, Steven A Julious

Statistical Methods in Medical Research

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Research article

First published 2021-1

Understanding between-cluster variation in prevalence and limits for how much variation is plausible

Mark D Chatfield, Daniel M Farewell

Statistical Methods in Medical Research

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Research article

First published 2021-10

Intra-cluster correlations from the CLustered OUtcome Dataset bank to inform the design of longitudinal cluster trials

Elizabeth Korevaar, Jessica Kasza, Monica Taljaard [...]

Clinical Trials

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Research article

First published 2022-4

Marginal modeling in community randomized trials with rare events: Utilization of the negative binomial regression model

Philip M Westgate, Debbie M Cheng, Daniel J Feaster [...]

Clinical Trials

Open access

Research article

First published 2025-10

Hybrid sample size calculations for cluster randomised trials using assurance

S. Faye Williamson, Svetlana V Tishkovskaya, Kevin J Wilson

Clinical Trials

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Research article

First published 2019-2

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 outcomes

Philip M Westgate

Clinical Trials

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Research article

First published 2024-12

Reconsidering stepped wedge cluster randomized trial designs with implementation periods: Fewer sequences or the parallel-group design with baseline and implementation periods are potentially more efficient

Philip M Westgate, Shawn R Nigam, Abigail B Shoben

Clinical Trials

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Research article

First published 2016-6

How big should the pilot study for my cluster randomised trial be?

Sandra M Eldridge, Ceire E Costelloe, Brennan C Kahan [...]

Statistical Methods in Medical Research

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Research article

First published 2022-6

Use of information criteria for selecting a correlation structure for longitudinal cluster randomised trials

Ehsan Rezaei-Darzi, Jessica Kasza, Andrew Forbes [...]

Clinical Trials

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Research article

First published 2001-12

On the Measurement of Concordance Among Variables and Its Application

Ie-Bin Lian, Wen-Chin Young

Journal of Educational and Behavioral Statistics

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