Frequencies for first 10,000 rows of ethnic variable in nhamcsopd1994 dataset :

        patient |
      ethnicity |      Freq.     Percent        Cum.
----------------+-----------------------------------
Hispanic Origin |      2,076       20.76       20.76
   Not Hispanic |      7,924       79.24      100.00
----------------+-----------------------------------
          Total |     10,000      100.00

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