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

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        666        6.66        6.66
          2 |         42        0.42        7.08
          3 |        152        1.52        8.60
          4 |         66        0.66        9.26
          5 |        935        9.35       18.61
          8 |        130        1.30       19.91
          9 |      8,009       80.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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