Frequencies for first 10,000 rows of ume_forcp variable in natlterr2011 dataset :

Forceps RFP |
734=f_u_for |
     cp U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         76        0.76        0.76
          2 |      7,589       75.89       76.65
          9 |      2,335       23.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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