• Corpus ID: 239016140

Exact Bias Correction for Linear Adjustment of Randomized Controlled Trials

  title={Exact Bias Correction for Linear Adjustment of Randomized Controlled Trials},
  author={Haoge Chang and Joel A. Middleton and Peter M. Aronow},
In an influential critique of empirical practice, Freedman [Fre08a, Fre08b] showed that the linear regression estimator was biased for the analysis of randomized controlled trials under the randomization model. Under Freedman’s assumptions, we derive exact closed-form bias corrections for the linear regression estimator with and without treatment-by-covariate interactions. We show that the limiting distribution of the bias corrected estimator is identical to the uncorrected estimator, implying… 


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  • D. Freedman
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    Adv. Appl. Math.
  • 2008
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