Frequencies for first 10,000 rows of me_attf variable in natlterr2006 dataset :

  Attempted |
Forceps RFP |
617=f_md_at |
     tfor R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,275       62.75       62.75
          N |      3,566       35.66       98.41
          Y |        159        1.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015