Frequencies for first 10,000 rows of ethun variable in nhamcsed2007 dataset :

   patient ethnicity - |
             unimputed |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                 blank |      2,155       21.55       21.55
    hispanic or latino |        980        9.80       31.35
not hispanic or latino |      6,865       68.65      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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