Frequencies for first 10,000 rows of region variable in nhamcsopd1995 dataset :

 geographic |
  region of |
   hospital |      Freq.     Percent        Cum.
------------+-----------------------------------
  Northeast |      5,542       55.42       55.42
    Midwest |      3,709       37.09       92.51
      South |        584        5.84       98.35
       West |        165        1.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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