Frequencies for first 10,000 rows of ab_binj variable in natlterr2013 dataset :

      Birth |
 Injury RFP |
634=f_ab_in |
        j R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,077       10.77       10.77
          N |      8,570       85.70       96.47
          U |        333        3.33       99.80
          Y |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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