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

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        497        4.97        4.97
          2 |         94        0.94        5.91
          3 |         43        0.43        6.34
          4 |          2        0.02        6.36
          5 |        377        3.77       10.13
          8 |        160        1.60       11.73
          9 |      8,827       88.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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