Frequencies for first 10,000 rows of region variable in nhamcsed2011 dataset :

 Geographic |
     region |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      6,409       64.09       64.09
    Midwest |      3,591       35.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016