Frequencies for first 10,000 rows of paypriv variable in nhamcsopd2006 dataset :

   expected |
  source of |
   payment: |
    private |
  insurance |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      6,090       60.90       60.90
        Yes |      3,910       39.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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