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Contemp Clin Trials. 2013 Nov;36(2):527-30. doi: 10.1016/j.cct.2013.09.017. Epub 2013 Oct 9.

A unifying framework for standard and covariate-adaptive randomization procedures based on minimizing suitable imbalance functions.

Author information

  • 1National Cancer Institute, Biometry Research Group, 9609 Medical Center Drive, Rockville, MD 20850, United States; University of Maryland Baltimore County, United States. Electronic address: vb78c@nih.gov.

Abstract

Minimization is based on minimizing an imbalance function defined in terms of one or more covariates. Standard (non-adaptive) randomization procedures, on the other hand, generally do not specify or try to minimize an imbalance function. However, it turns out that they may be formulated in this manner. Doing so places adaptive and standard randomization procedures within the same framework, and also suggests novel randomization procedures that combine the best elements of both.

Published by Elsevier Inc.

KEYWORDS:

Adaptive randomization; Allocation concealment; Imbalance function

PMID:
24120653
[PubMed - indexed for MEDLINE]
PMCID:
PMC3850514
Free PMC Article
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