Frequencies for first 10,000 rows of region variable in nhamcsed1996 dataset :

 geographic |
  region of |
   hospital |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      2,982       29.82       29.82
    Midwest |      2,596       25.96       55.78
      South |      2,055       20.55       76.33
       West |      2,367       23.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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