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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 2021-10

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

Open access

Research article

First published 2023-2

A hybrid approach to comparing parallel-group and stepped-wedge cluster-randomized trials with a continuous primary outcome when there is uncertainty in the intra-cluster correlation

Samuel K Sarkodie, James MS Wason, Michael J Grayling

Clinical Trials

Retricted access

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

Retricted access

Research article

First published 2017-10

Dynamic prediction models for clustered and interval-censored outcomes: Investigating the intra-couple correlation in the risk of dementia

Virginie Rondeau, Audrey Mauguen, Alexandre Laurent [...]

Statistical Methods in Medical Research

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Research article

First published 2019-3

Impact of non-uniform correlation structure on sample size and power in multiple-period cluster randomised trials

J Kasza, K Hemming, R Hooper [...]

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 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

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

Retricted access

Research article

First published 2015-2

Cluster randomised crossover trials with binary data and unbalanced cluster sizes: Application to studies of near-universal interventions in intensive care

Andrew B Forbes, Muhammad Akram, David Pilcher [...]

Clinical Trials

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