Frequencies for first 10,000 rows of bfed variable in natl2017 dataset :

     Infant |
  Breastfed |
         at |
Discharge Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |        798        7.98        7.98
          U |         62        0.62        8.60
          Y |      9,140       91.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Sep 2018