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

   Father's |
    Bridged |
   Race U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,620       56.20       56.20
          2 |        638        6.38       62.58
          5 |          1        0.01       62.59
          8 |          1        0.01       62.60
         99 |        318        3.18       65.78
          . |      3,422       34.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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