Optimum biased-coin designs for sequential treatment allocation with covariate information.
Randomized optimum designs of biased-coin type are compared with other strategies for the sequential allocation of two or more treatments in a clinical trial. The emphasis is on the variance of estimated treatment contrasts. This variance, which depends on the design strategy employed, may be interpreted as the number of patients on whom information is lost. Simulations provide clear plots of the evolution of this loss during the course of the clinical trial.
The London School of Economics, London WC2A 2AE, U.K. a.c.atkinson@lse.ac.uk
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Atkinson
D015982:Bias; D003198:Computer Simulation; D006801:Humans; D016014:Linear Models; D008954:Models, Biological; D016032:Randomized Controlled Trials as Topic / Q000592:standards / Q000706:statistics & numerical data*; D012044:Regression Analysis