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

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        664        6.64        6.64
          2 |         68        0.68        7.32
          3 |         42        0.42        7.74
          4 |         67        0.67        8.41
          5 |        979        9.79       18.20
          8 |        113        1.13       19.33
          9 |      8,067       80.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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