The essential role of balance tests in propensity-matched observational studies: comments on 'A critical appraisal of propensity-score matching in the medical literature between 1996 and 2003' by Peter Austin, Statistics in Medicine.

@article{Hansen2008TheER,
  title={The essential role of balance tests in propensity-matched observational studies: comments on 'A critical appraisal of propensity-score matching in the medical literature between 1996 and 2003' by Peter Austin, Statistics in Medicine.},
  author={Barbara Hansen},
  journal={Statistics in medicine},
  year={2008},
  volume={27 12},
  pages={2050-4; discussion 2066-9}
}
Peter Austin has made an exacting, timely and eye-opening review of uses of propensity-score matching in medical research. Its Section 2.1 argues that the reports of propensity-matched analyses should include descriptive assessments of matched treatment-control differences on baseline variables. When propensity matching on covariates including BMI, for example, one should report the difference between matched cohorts’ mean BMIs, perhaps after inverse scaling by the pooled s.d. of BMIs prior to… CONTINUE READING

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