This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.
Abstract Details
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Activity Number:
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641
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Type:
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Contributed
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Date/Time:
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Thursday, August 5, 2010 : 8:30 AM to 10:20 AM
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Sponsor:
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Social Statistics Section
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| Abstract - #308161 |
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Title:
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Re-Randomization in Randomized Experiments
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Author(s):
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Kari F. Lock*+ and Donald B. Rubin
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Companies:
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Harvard University and Harvard University
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Address:
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, , ,
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Keywords:
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re-randomization ;
randomized experiments ;
covariate balance
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Abstract:
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Randomized experiments are the "gold standard" for conducting research and establishing a causal effect, yet often in practice chance imbalances exist in covariates. If covariate data is available before an experiment is conducted, should we check covariate balance for a proposed randomized treatment assignment? If covariate balance is bad on a particular randomization, are we allowed to throw that randomization out and re-randomize? Here we describe a procedure for implementing re-randomization, and explore the implications for the estimation of the treatment effect.
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