Frequencies for casetagroup variable in impact2016 dataset :

DRG Grouper |
Version for |
     caseta |      Freq.     Percent        Cum.
------------+-----------------------------------
         33 |      3,447      100.00      100.00
------------+-----------------------------------
      Total |      3,447      100.00

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