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

    Alcohol |
      Test- |
     Status |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,339       53.39       53.39
          1 |          4        0.04       53.43
          2 |      3,956       39.56       92.99
          8 |        690        6.90       99.89
          9 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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