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    • cem: Coarsened Exact Matching in Stata 

      Blackwell, Matthew; Iacus, Stefano; King, Gary; Porro, Giuseppe (StataCorp, 2010)
      This paper introduces a Stata implementation of Coarsened Exact Matching (CEM), a new method for improving the estimation of causal effects by reducing imbalance in co-variates between treated and control groups. CEM is ...