Frequencies for first 10,000 rows of uld_breech variable in natl2015 dataset :

   Breech 1 |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        458        4.58        4.58
          2 |      9,542       95.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016