Frequencies for first 10,000 rows of phys variable in namcs2012 dataset :

  Physician |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |        374        3.74        3.74
        Yes |      9,626       96.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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