Frequencies for first 10,000 rows of ethnic variable in nhamcsopd1999 dataset :

     patient ethnicity |      Freq.     Percent        Cum.
-----------------------+-----------------------------------
    Hispanic or Latino |      1,610       16.10       16.10
Not Hispanic or Latino |      7,365       73.65       89.75
                 Blank |      1,025       10.25      100.00
-----------------------+-----------------------------------
                 Total |     10,000      100.00

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