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

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        450        4.50        4.50
          2 |         93        0.93        5.43
          3 |         47        0.47        5.90
          4 |          2        0.02        5.92
          5 |        437        4.37       10.29
          8 |        164        1.64       11.93
          9 |      8,807       88.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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