Frequencies for first 10,000 rows of mraceimp variable in natl2006 dataset :

   Mother's |
       Race |
    Imputed |
   Flag U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,788       97.88       97.88
          1 |        212        2.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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