Frequencies for first 10,000 rows of uop_induc variable in natlterr2008 dataset :

  Induction |
   of labor |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        368        3.68        3.68
          2 |      8,277       82.77       86.45
          9 |      1,355       13.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016