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

Forceps RFP |
734=f_u_for |
    cep U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         23        0.23        0.23
          2 |      8,560       85.60       85.83
          9 |      1,417       14.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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