Frequencies for first 10,000 rows of ethnic variable in nhamcsopd1998 dataset :

        patient |
      ethnicity |      Freq.     Percent        Cum.
----------------+-----------------------------------
Hispanic Origin |      1,779       17.79       17.79
   Not Hispanic |      6,175       61.75       79.54
          Blank |      2,046       20.46      100.00
----------------+-----------------------------------
          Total |     10,000      100.00

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