Frequencies for first 10,000 rows of bfed variable in natl2014 dataset :

     Infant |
  Breastfed |
         at |
Discharge Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |        742        7.42        7.42
          U |        146        1.46        8.88
          Y |      9,112       91.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016