Frequencies for first 10,000 rows of ld_indl variable in natlterr2006 dataset :

  Induction |
   of Labor |
        RFP |
608=f_ld_in |
     duct R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,275       62.75       62.75
          N |      3,392       33.92       96.67
          Y |        333        3.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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