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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 CandelBritish Journal of Health Psychology|January 14, 2011
No smoke without fire: The impact of future friends on adolescent smoking behaviourL Mercken, M Candel, L van Osch, et al.The British Journal of Mathematical and Statistical Psychology|November 15, 2025
Sample size determination for hypothesis testing on the intraclass correlation coefficient in a two-way analysis of variance modelDipro Mondal, Alberto Cassese, Math J J M Candel, et al.Addictive Behaviors|May 12, 2004
Motivational stages of adolescent smoking initiation: predictive validity and predictors of transitionsS P J Kremers, H de Vries, A N Mudde, et al.Statistics in Medicine|September 27, 2017
Efficient treatment allocation in 2 × 2 multicenter trials when costs and variances are heterogeneousFrancesca Lemme, Gerard J P van Breukelen, Math J J M CandelPageof 11