Frequencies for first 10,000 rows of mraceimp variable in natl2007 dataset :

   Mother's |
       Race |
    Imputed |
   Flag U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,786       97.86       97.86
          1 |        213        2.13       99.99
          2 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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