Frequencies for low variable in drg2008 dataset :

 Low Volume |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        992       99.30       99.30
          * |          7        0.70      100.00
------------+-----------------------------------
      Total |        999      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016