Implementing double-robust estimators of causal effects

TY - JOUR

T1 - Implementing double-robust estimators of causal effects

AU - Emsley, Richard

AU - Lunt, Mark

AU - Pickles, Andrew

AU - Dunn, Graham

PY - 2008

Y1 - 2008

N2 - This article describes the implementation of a double-robust estimator for pretest-posttest studies (Lunceford and Davidian, 2004. Statistics in Medicine 23; 2937-2960) and presents a new Stata command (dr) that carries out the procedure. A double-robust estimator gives the analyst two opportunities for obtaining unbiased inference when adjusting for selection effects such as confounding by allowing for different forms of model misspecification; a double-robust estimator also can offer increased efficiency when all the models are correctly specified. We demostrate the results with a Monte Carlo simulation study, and we show how to implement the double-robust estimator on a single simulated dataset, both manually and by using the dr command.

AB - This article describes the implementation of a double-robust estimator for pretest-posttest studies (Lunceford and Davidian, 2004. Statistics in Medicine 23; 2937-2960) and presents a new Stata command (dr) that carries out the procedure. A double-robust estimator gives the analyst two opportunities for obtaining unbiased inference when adjusting for selection effects such as confounding by allowing for different forms of model misspecification; a double-robust estimator also can offer increased efficiency when all the models are correctly specified. We demostrate the results with a Monte Carlo simulation study, and we show how to implement the double-robust estimator on a single simulated dataset, both manually and by using the dr command.

M3 - Article

SN - 1536-867X

VL - 8

SP - 334

EP - 353

JO - STATA JOURNAL

JF - STATA JOURNAL

IS - 3

ER -