Frequencies for first 10,000 rows of region variable in nhamcsed1994 dataset :

 geographic |
  region of |
   hospital |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      4,066       40.66       40.66
    Midwest |      2,904       29.04       69.70
      South |      2,409       24.09       93.79
       West |        621        6.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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