Frequencies for first 10,000 rows of region variable in nhamcsed1993 dataset :

 geographic |
  region of |
   hospital |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      4,568       45.68       45.68
    Midwest |      3,430       34.30       79.98
      South |      1,808       18.08       98.06
       West |        194        1.94      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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