Skip to main content
Fig. 2 | BMC Medical Research Methodology

Fig. 2

From: A new randomization procedure based on multiple covariates and applicable to parallel studies with simultaneous enrollment of all subjects prior to intervention

Fig. 2

D s-efficiencies for potential stratified randomizations in the motivating example. Ten thousand study designs are generated by random allocation of subject to arms, stratified by first-visit group. The figure shows Ds efficiencies of the 10,000 study designs with respect to covariates gender, age, BMI, a composite health score and membership of one of 17 first-visit groups as covariates. The red bar denotes the efficiency obtained with the proposed procedure, which addresses all covariates simultaneously

Back to article page