Frequencies for first 10,000 rows of owner variable in nhamcsed2007 dataset :

     hospital ownership |      Freq.     Percent        Cum.
------------------------+-----------------------------------
   voluntary non-profit |      7,469       74.69       74.69
government, non-federal |      1,909       19.09       93.78
            proprietary |        622        6.22      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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