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

      Fetal |
    Alcohol |
   Syndrome |
        RFP |
742=f_uab_a |
   lcosyn U |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |      4,782       47.82       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