Frequencies for first 10,000 rows of bfed variable in natl2013 dataset :

     Infant |
      Being |
  Breastfed |
        RFP |
 581=f_bfed |
          R |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      1,152       11.52       11.52
          U |        387        3.87       15.39
          Y |      8,461       84.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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