Frequencies for first 10,000 rows of mracerec variable in linkpe2009psden dataset :

   Mother's |
Race Recode |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,124       61.24       61.24
          2 |        744        7.44       68.68
          3 |          3        0.03       68.71
          4 |      3,129       31.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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