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Simple sample size calculation for cluster-randomized trials

International Journal of Epidemiology · 1999 · Vol. 28(2) · pp. 319–326

Richard Hayes✉(London School of Hygiene & Tropical Medicine)S. Bennett

Abstract

The methods are illustrated using two case studies: an unmatched trial of the impact of impregnated bednets on child mortality in Kenya, and a pair-matched trial of improved sexually-transmitted disease (STD) treatment services for HIV prevention in Tanzania.

Statistical Methods and Bayesian Inference HIV/AIDS Research and Interventions Census and Population EstimationSample size determinationCluster (spacecraft)StatisticsRandomized controlled trialTanzaniaMedicineCluster randomised controlled trialClinical trialDemographyMathematics

MeSH terms

Child, PreschoolUnited KingdomHumansKenyaSensitivity and SpecificityTanzaniaCluster AnalysisRandomized Controlled Trials as TopicSample Size

Funding

Medical Research Council

Citations

836

FWCI

8.64

field-weighted impact

References

Percentile

98%

vs. same field & year

Citations per year

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