Frequencies for first 10,000 rows of uop_induc variable in natl2014 dataset :

  Induction |
 of Labor 1 |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,434       24.34       24.34
          2 |      7,493       74.93       99.27
          9 |         73        0.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016