Frequencies for ehrred variable in impact2018 dataset :

  Proxy EHR |
  Reduction |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,243       96.23       96.23
          1 |        127        3.77      100.00
------------+-----------------------------------
      Total |      3,370      100.00

by Jean Roth , jroth@nber.org , 30 Aug 2017