Frequencies for first 10,000 rows of attphys variable in nhamcsed2014 dataset :

         ED |
  attending |
  physician |
       seen |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |        915        9.15        9.15
        Yes |      9,085       90.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017