Frequencies for first 10,000 rows of staffmd variable in nhamcsed2003 dataset :

      staff |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      1,417       14.17       14.17
        yes |      8,583       85.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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