Frequencies for first 10,000 rows of region variable in nhamcsed2012 dataset :

 Geographic |
     region |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      6,010       60.10       60.10
    Midwest |      3,990       39.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016