Frequencies for first 10,000 rows of ownsmg variable in nhamcsopd1999 dataset :

     hospital ownership |      Freq.     Percent        Cum.
------------------------+-----------------------------------
   Voluntary non-profit |      8,339       83.39       83.39
Government, non-Federal |      1,520       15.20       98.59
            Proprietary |        141        1.41      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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