Frequencies for first 10,000 rows of ownsmg variable in nhamcsopd1993 dataset :

     hospital ownership |      Freq.     Percent        Cum.
------------------------+-----------------------------------
  Voluntary, non-profit |      7,203       72.03       72.03
Government, non-Federal |      1,769       17.69       89.72
            Proprietary |      1,028       10.28      100.00
------------------------+-----------------------------------
                  Total |     10,000      100.00

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