Frequencies for first 10,000 rows of bfed variable in natlterr2012 dataset :

     Infant |
      Being |
  Breastfed |
        RFP |
 581=f_bfed |
          R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,163       11.63       11.63
          N |      2,030       20.30       31.93
          U |      1,292       12.92       44.85
          Y |      5,515       55.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016