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

 Breech RFP |
721=f_uld_b |
  reech U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        243        2.43        2.43
          2 |      6,033       60.33       62.76
          9 |      3,724       37.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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