Frequencies for first 10,000 rows of me_pres variable in natlterr2015 dataset :

      Fetal |
Presentatio |
       n at |
 Delivery 1 |
   Cephalic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,078       10.78       10.78
          1 |      7,540       75.40       86.18
          2 |        249        2.49       88.67
          3 |        346        3.46       92.13
          9 |        787        7.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016