Frequencies for first 10,000 rows of medicare variable in nhamcsed1992 dataset :

   Expected |
  source of |
payment-Med |
      icare |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,732       87.32       87.32
          1 |      1,268       12.68      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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