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

 Breech U;R |
(f_uld_bree |
     ch rep |
      flag) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        266        2.66        2.66
          2 |      9,682       96.82       99.48
          9 |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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