Frequencies for first 10,000 rows of bfed variable in natl2016 dataset :

     Infant |
  Breastfed |
         at |
Discharge Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |        790        7.90        7.90
          U |         58        0.58        8.48
          Y |      9,152       91.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 4 Oct 2017