Frequencies for first 10,000 rows of ethnic variable in nhamcsopd2001 dataset :

     patient ethnicity |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
                 Blank |      1,569       15.69       15.69
    Hispanic or Latino |      2,460       24.60       40.29
Not Hispanic or Latino |      5,971       59.71      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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