Frequencies for first 10,000 rows of ld_indl variable in natlterr2014 dataset :

  Induction |
 of Labor Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,077       10.77       10.77
          N |      8,173       81.73       92.50
          U |        157        1.57       94.07
          Y |        593        5.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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