Frequencies for first 10,000 rows of owner variable in nhamcsopd2010 dataset :

     hospital ownership |      Freq.     Percent        Cum.
------------------------+-----------------------------------
   voluntary non-profit |      6,846       68.46       68.46
government, non-federal |      2,374       23.74       92.20
            proprietary |        780        7.80      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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