Multiple imputation in quantile regression.

نویسندگان

  • Ying Wei
  • Yanyuan Ma
  • Raymond J Carroll
چکیده

We propose a multiple imputation estimator for parameter estimation in a quantile regression model when some covariates are missing at random. The estimation procedure fully utilizes the entire dataset to achieve increased efficiency, and the resulting coefficient estimators are root-n consistent and asymptotically normal. To protect against possible model misspecification, we further propose a shrinkage estimator, which automatically adjusts for possible bias. The finite sample performance of our estimator is investigated in a simulation study. Finally, we apply our methodology to part of the Eating at American's Table Study data, investigating the association between two measures of dietary intake.

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عنوان ژورنال:
  • Biometrika

دوره 99 2  شماره 

صفحات  -

تاریخ انتشار 2012