Frequencies for first 10,000 rows of phys variable in namcs2013 dataset :

  Physician |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |        213        2.13        2.13
        Yes |      9,787       97.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017