On an ethical cum optimal adaptive allocation design
Abstract: In the present work, we formulate a two-treatment single period two-stage adaptive allocation design for achieving larger allocation proportion to the better treatment arm in the course of the trial with increased precision of the parameter estimator. We examine some properties of the proposed rule and compare it with some of the existing allocation rules and report substantial gain in efficiency with a considerably larger number of allocations to the better treatment even for moderate sample sizes.
Cites background from "On an ethical cum optimal adaptive ..."
...Bandyopadhyay and Bhattacharya (2006) and Bandyopadhyay and Bhattacharya (2007) identified these issues and incorporating randomization in a convenient way, developed an ethical allocation after sequential determination of the first stage sampling allocation fraction....
... for randomized-play-the-winner rule and ref....