Frequencies for first 10,000 rows of physasst variable in nhamcsopd2011 dataset :

  Physician |
  assistant |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,075       90.75       90.75
        Yes |        925        9.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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