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

      Birth |
 Injury RFP |
634=f_ab_in |
        j R |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      9,677       96.77       96.77
          U |        310        3.10       99.87
          Y |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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