Frequencies for first 10,000 rows of mcare13x variable in h84 dataset :

 PID COV BY |
 MEDICARE - |
     EDITED |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,261       12.61       12.61
          2 |      8,739       87.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Feb 2018