Frequencies for first 10,000 rows of ethnic variable in namcs1997 dataset :

        patient |
      ethnicity |      Freq.     Percent        Cum.
----------------+-----------------------------------
Hispanic Origin |        722        7.22        7.22
   Not Hispanic |      7,314       73.14       80.36
          Blank |      1,964       19.64      100.00
----------------+-----------------------------------
          Total |     10,000      100.00

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