Frequencies for first 10,000 rows of region variable in nhamcsopd2008 dataset :

 geographic |
     region |      Freq.     Percent        Cum.
------------+-----------------------------------
  northeast |      2,808       28.08       28.08
    midwest |      3,087       30.87       58.95
      south |      2,504       25.04       83.99
       west |      1,601       16.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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