Frequencies for first 10,000 rows of mbrace variable in natlterr2011 dataset :

   Mother's |
    Bridged |
Race** R*** |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,077       40.77       40.77
          2 |        510        5.10       45.87
          3 |          5        0.05       45.92
          4 |          4        0.04       45.96
          5 |        225        2.25       48.21
          6 |        603        6.03       54.24
          7 |         37        0.37       54.61
          8 |         92        0.92       55.53
          9 |          1        0.01       55.54
         10 |         20        0.20       55.74
         11 |          7        0.07       55.81
         12 |      1,091       10.91       66.72
         13 |          2        0.02       66.74
         14 |        722        7.22       73.96
         24 |         68        0.68       74.64
          . |      2,536       25.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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