Frequencies for first 10,000 rows of ab_binj variable in natlterr2010 dataset :

      Birth |
 Injury RFP |
634=f_ab_in |
        j R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,656       46.56       46.56
          N |      4,350       43.50       90.06
          U |        976        9.76       99.82
          Y |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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