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

  Attempted |
Forceps RFP |
617=f_md_at |
     tfor R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,061       60.61       60.61
          N |      3,317       33.17       93.78
          U |        535        5.35       99.13
          Y |         87        0.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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