Frequencies for first 10,000 rows of uab_injury variable in natlterr2006 dataset :

      Birth |
 Injury RFP |
741=f_uab_i |
    njury U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.03        0.03
          2 |      4,779       47.79       47.82
          9 |      1,493       14.93       62.75
          . |      3,725       37.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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