Mediation analysis via potential outcomes models.

  title={Mediation analysis via potential outcomes models.},
  author={Jeffrey M Albert},
  journal={Statistics in medicine},
  volume={27 8},
This paper develops a causal or manipulation model framework for mediation analysis based on the concept of potential outcome. Using this framework, we provide new definitions and measures of mediation. Effects of manipulations are modeled via the linear structural model. Corresponding structural equation models (SEMs), in conjunction with two-stage least-squares estimation and the delta method, are used to perform inference. The methods are applied to data from a study of nursing interventions… CONTINUE READING

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