Frequencies for first 10,000 rows of mrace3 variable in linkco1991us_num dataset :

    Race of |
     Mother |
     Recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,448       64.48       64.48
          2 |        534        5.34       69.82
          3 |      3,018       30.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015