Frequencies for first 10,000 rows of ethun variable in nhamcsed2013 dataset :

   Unimputed ethnicity |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                 Blank |      2,927       29.27       29.27
    Hispanic or Latino |      1,773       17.73       47.00
Not Hispanic or Latino |      5,300       53.00      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016