Frequencies for first 10,000 rows of physasst variable in nhamcsed2004 dataset :

  physician |
  assistant |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,247       92.47       92.47
        yes |        753        7.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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