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

   Refer to |
      other |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      8,814       88.14       88.14
        Yes |      1,186       11.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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