Frequencies for first 10,000 rows of ethun variable in nhamcsopd2010 dataset :

     patient ethnicity |
           (unimputed) |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                 blank |      1,498       14.98       14.98
    hispanic or latino |      1,319       13.19       28.17
not hispanic or latino |      7,183       71.83      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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