Frequencies for first 10,000 rows of mracerec variable in natl2008 dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,714       67.14       67.14
          2 |      3,125       31.25       98.39
          3 |         30        0.30       98.69
          4 |        131        1.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016