Frequencies for cmivgroup variable in impact2015 dataset :

DRG Grouper |
Version for |
       cmiv |      Freq.     Percent        Cum.
------------+-----------------------------------
         32 |      3,476      100.00      100.00
------------+-----------------------------------
      Total |      3,476      100.00

by Jean Roth , jroth@nber.org , 16 Dec 2016