Frequencies for first 10,000 rows of privins variable in nhamcsopd1992 dataset :

   Expected |
  source of |
payment-Pri |
  vate/Comm |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,421       84.21       84.21
          1 |      1,579       15.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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