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

      Fetal |
Presentatio |
       n at |
 Delivery 1 |
   Cephalic |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,077       10.77       10.77
          1 |      6,624       66.24       77.01
          2 |        248        2.48       79.49
          3 |        119        1.19       80.68
          9 |      1,932       19.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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