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Statistics in Medicine|June 12, 2018
Efficient design of cluster randomized trials with treatment-dependent costs and treatment-dependent unknown variancesGerard J P van Breukelen, Math J J M CandelStatistics in Medicine|May 28, 2009
Varying cluster sizes in trials with clusters in one treatment arm: sample size adjustments when testing treatment effects with linear mixed modelsMath J J M Candel, Gerard J P Van BreukelenStatistical Methods in Medical Research|September 23, 2011
Efficient design of cluster randomized and multicentre trials with unknown intraclass correlationGerard J P van Breukelen, Math J J M CandelStatistical Methods in Medical Research|December 19, 2014
Sample size calculation for treatment effects in randomized trials with fixed cluster sizes and heterogeneous intraclass correlations and variancesMath J J M Candel, Gerard J P van BreukelenBiometrical Journal. Biometrische Zeitschrift|July 11, 2021
Maximin design of cluster randomized trials with heterogeneous costs and variancesGerard J P van Breukelen, Math J J M CandelJournal of Clinical Epidemiology|September 29, 2012
Calculating sample sizes for cluster randomized trials: we can keep it simple and efficient!Gerard J P van Breukelen, Math J J M CandelPsychological Methods|February 13, 2025
Efficient design of cluster randomized trials and individually randomized group treatment trialsMath J J M Candel, Gerard J P van BreukelenStatistics in Medicine|January 27, 2010
Sample size adjustments for varying cluster sizes in cluster randomized trials with binary outcomes analyzed with second-order PQL mixed logistic regressionMath J J M Candel, Gerard J P Van BreukelenStatistics in Medicine|January 13, 2016
Repairing the efficiency loss due to varying cluster sizes in two-level two-armed randomized trials with heterogeneous clusteringMath J J M Candel, Gerard J P Van BreukelenThe American Journal of Clinical Nutrition|June 3, 2023
Best (but oft forgotten) practices: Efficient sample sizes for commonly used trial designsMath J J M Candel, Gerard J P van BreukelenPageof 12