The central role of the propensity score in observational studies for causal effects

@inproceedings{Rosenbaum2005TheCR,
  title={The central role of the propensity score in observational studies for causal effects},
  author={Paul R. Rosenbaum and Donald B. Rubin},
  year={2005}
}
The propensity score is the conditional probability of assignment to a particular treatment given a vector of observed covariates. Both large and small sample theory show that adjustment for the scalar propensity score is sufficient to remove bias due to all observed covariates. Applications include: (i) matched sampling on the univariate propensity score, which is a generalization of discriminant matching, (ii) multivariate adjustment by subclassification on the propensity score where the same… CONTINUE READING
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