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Controlling for time-dependent confounding using marginal structural models

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Author Info

  • Zoe Fewell

    ()
    (University of Bristol)

  • Frederick Wolfe

    ()
    (National Data Bank for Rheumatic Diseases)

  • Hyon Choi

    ()
    (Harvard Medical School)

  • Miguel A. Hernán

    ()
    (Harvard School of Public Health)

  • Kate Tilling

    ()
    (University of Bristol)

  • Jonathan A. C. Sterne

    ()
    (University of Bristol)

Registered author(s):

    Abstract

    Longitudinal studies in which exposures, confounders, and outcomes are measured repeatedly over time have the potential to allow causal inferences about the effects of exposure on outcome. There is particular interest in estimating the causal effects of medical treatments (or other interventions) in circumstances in which a randomized controlled trial is difficult or impossible. However, standard methods for estimating exposure effects in longitudinal studies are biased in the presence of time-dependent confounders affected by prior treatment. This article describes the use of marginal structural models (described by Robins, Hernán, and Brumback [2000]) to estimate exposure or treatment effects in the presence of time-dependent confounders affected by prior treatment. The method is based on deriving inverse-probability-of-treatment weights, which are then used in a pooled logistic regression model to estimate the causal effect of treatment on outcome. We demonstrate the use of marginal structural models to estimate the effect of methotrexate on mortality in persons suffering from rheumatoid arthritis. Copyright 2004 by StataCorp LP.

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    Bibliographic Info

    Article provided by StataCorp LP in its journal Stata Journal.

    Volume (Year): 4 (2004)
    Issue (Month): 4 (December)
    Pages: 402-420

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    Handle: RePEc:tsj:stataj:v:4:y:2004:i:4:p:402-420

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    Related research

    Keywords: marginal structural models; causal models; weighted regression; survival analysis; logistic regression; confounding;

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    Cited by:
    1. Buenstorf, Guido, 2009. "Is commercialization good or bad for science? Individual-level evidence from the Max Planck Society," Research Policy, Elsevier, vol. 38(2), pages 281-292, March.
    2. Do, D. Phuong & Wang, Lu & Elliott, Michael R., 2013. "Investigating the relationship between neighborhood poverty and mortality risk: A marginal structural modeling approach," Social Science & Medicine, Elsevier, vol. 91(C), pages 58-66.

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