Frequencies for first 10,000 rows of region variable in nhamcsed2000 dataset :

 geographic |
  region of |
   hospital |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      3,958       39.58       39.58
    Midwest |      2,901       29.01       68.59
      South |      2,174       21.74       90.33
       West |        967        9.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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