Frequencies for first 10,000 rows of breech variable in natlterr1997 dataset :

Breech/Malp |
resentation |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        189        1.89        1.89
          2 |      9,806       98.06       99.95
          9 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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