Using Cardinality Matching to Design Balanced and Representative Samples for Observational Studies.

  title={Using Cardinality Matching to Design Balanced and Representative Samples for Observational Studies.},
  author={Bijan A. Niknam and Jos{\'e} R. Zubizarreta},
  volume={327 2},
Acknowledgements: This work was supported through a Patient-Centered Outcomes Research Institute (PCORI) Project Program Award (ME-2019C1-16172). PCORI had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication. For graphics, we thank Xavier Alemany, BS. 

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