Frequencies for first 10,000 rows of ethun variable in nhamcsopd2007 dataset :

     patient ethnicity |
           (unimputed) |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                 blank |      2,167       21.67       21.67
    hispanic or latino |      1,194       11.94       33.61
not hispanic or latino |      6,639       66.39      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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