Frequencies for first 10,000 rows of medicare variable in nhamcsed1995 dataset :

   medicare |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,650       86.50       86.50
          1 |      1,350       13.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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