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Marginal Structural Models for Risk or Prevalence Ratios for a Point Exposure Using a Disease Risk Score.


ABSTRACT: The disease risk score is a summary score that can be used to control for confounding with a potentially large set of covariates. While less widely used than the exposure propensity score, the disease risk score approach might be useful for novel or unusual exposures, when treatment indications or exposure patterns are rapidly changing, or when more is known about the nature of how covariates cause disease than is known about factors influencing propensity for the exposure of interest. Focusing on the simple case of a binary point exposure, we describe a marginal structural model for estimation of risk (or prevalence) ratios. The proposed model incorporates the disease risk score as an offset in a regression model, and it yields an estimate of a standardized risk ratio where the target population is the exposed group. Simulations are used to illustrate the approach, and an empirical example is provided. Confounder control based on the proposed method might be a useful alternative to approaches based on the exposure propensity score, or as a complement to them.

SUBMITTER: Richardson DB 

PROVIDER: S-EPMC6494663 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Marginal Structural Models for Risk or Prevalence Ratios for a Point Exposure Using a Disease Risk Score.

Richardson David B DB   Keil Alexander P AP   Kinlaw Alan C AC   Cole Stephen R SR  

American journal of epidemiology 20190501 5


The disease risk score is a summary score that can be used to control for confounding with a potentially large set of covariates. While less widely used than the exposure propensity score, the disease risk score approach might be useful for novel or unusual exposures, when treatment indications or exposure patterns are rapidly changing, or when more is known about the nature of how covariates cause disease than is known about factors influencing propensity for the exposure of interest. Focusing  ...[more]

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