Frequencies for first 10,000 rows of alc_det variable in person dataset :

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        563        5.63        5.63
          2 |         65        0.65        6.28
          3 |         35        0.35        6.63
          4 |          1        0.01        6.64
          5 |        455        4.55       11.19
          8 |        183        1.83       13.02
          9 |      8,698       86.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016