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Exploring the Subtleties of Inverse Probability Weighting and Marginal Structural Models.


ABSTRACT: Since being introduced to epidemiology in 2000, marginal structural models have become a commonly used method for causal inference in a wide range of epidemiologic settings. In this brief report, we aim to explore three subtleties of marginal structural models. First, we distinguish marginal structural models from the inverse probability weighting estimator, and we emphasize that marginal structural models are not only for longitudinal exposures. Second, we explore the meaning of the word "marginal" in "marginal structural model." Finally, we show that the specification of a marginal structural model can have important implications for the interpretation of its parameters. Each of these concepts have important implications for the use and understanding of marginal structural models, and thus providing detailed explanations of them may lead to better practices for the field of epidemiology.

SUBMITTER: Breskin A 

PROVIDER: S-EPMC5882514 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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Exploring the Subtleties of Inverse Probability Weighting and Marginal Structural Models.

Breskin Alexander A   Cole Stephen R SR   Westreich Daniel D  

Epidemiology (Cambridge, Mass.) 20180501 3


Since being introduced to epidemiology in 2000, marginal structural models have become a commonly used method for causal inference in a wide range of epidemiologic settings. In this brief report, we aim to explore three subtleties of marginal structural models. First, we distinguish marginal structural models from the inverse probability weighting estimator, and we emphasize that marginal structural models are not only for longitudinal exposures. Second, we explore the meaning of the word "margi  ...[more]

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