Frequencies for first 10,000 rows of medicare variable in namcs1995 dataset :

   medicare |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,440       74.40       74.40
          1 |      2,560       25.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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