Frequencies for first 10,000 rows of paypriv variable in nhamcsed2007 dataset :

    private |
  insurance |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      6,225       62.25       62.25
        yes |      3,775       37.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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