Frequencies for first 10,000 rows of paypriv variable in nhamcsed2013 dataset :

   Expected |
  source of |
   payment: |
    Private |
  insurance |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      6,729       67.29       67.29
        Yes |      3,271       32.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016