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

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        599        5.99        5.99
          2 |         46        0.46        6.45
          3 |         70        0.70        7.15
          4 |          2        0.02        7.17
          5 |        727        7.27       14.44
          8 |        166        1.66       16.10
          9 |      8,390       83.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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