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

      Fetal |
Presentatio |
      n RFP |
619=f_md_pr |
    esent R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,061       60.61       60.61
          1 |      3,810       38.10       98.71
          2 |         82        0.82       99.53
          3 |         46        0.46       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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