Frequencies for first 10,000 rows of owner variable in nhamcsopd2006 dataset :

     hospital ownership |      Freq.     Percent        Cum.
------------------------+-----------------------------------
   Voluntary non-profit |      7,990       79.90       79.90
Government, non-Federal |      1,653       16.53       96.43
            Proprietary |        357        3.57      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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