Frequencies for first 10,000 rows of paymcare variable in namcs2007 dataset :

   medicare |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      7,956       79.56       79.56
        yes |      2,044       20.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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