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

    ALCOHOL |
DETERMINATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        767        7.67        7.67
          2 |         38        0.38        8.05
          3 |         10        0.10        8.15
          4 |         23        0.23        8.38
          5 |        908        9.08       17.46
          8 |         83        0.83       18.29
          9 |      8,171       81.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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