Frequencies for alc_res variable in person dataset :

    ALCOHOL |
       TEST |
    RESULTS |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        424       39.37       39.37
          1 |          1        0.09       39.46
          2 |          7        0.65       40.11
          3 |          8        0.74       40.85
          4 |          7        0.65       41.50
          5 |          3        0.28       41.78
          6 |          1        0.09       41.88
          7 |          4        0.37       42.25
          8 |          6        0.56       42.80
          9 |          6        0.56       43.36
         10 |          6        0.56       43.92
         11 |          6        0.56       44.48
         12 |         11        1.02       45.50
         13 |          6        0.56       46.05
         14 |          8        0.74       46.80
         15 |         12        1.11       47.91
         16 |          7        0.65       48.56
         17 |          9        0.84       49.40
         18 |          7        0.65       50.05
         19 |         15        1.39       51.44
         20 |          8        0.74       52.18
         21 |          4        0.37       52.55
         22 |         11        1.02       53.57
         23 |          6        0.56       54.13
         24 |          5        0.46       54.60
         25 |          3        0.28       54.87
         26 |          5        0.46       55.34
         27 |          5        0.46       55.80
         28 |          6        0.56       56.36
         29 |          6        0.56       56.92
         30 |          2        0.19       57.10
         31 |          4        0.37       57.47
         32 |          3        0.28       57.75
         34 |          1        0.09       57.85
         36 |          3        0.28       58.12
         37 |          1        0.09       58.22
         39 |          1        0.09       58.31
         41 |          1        0.09       58.40
         96 |        431       40.02       98.42
         97 |         17        1.58      100.00
------------+-----------------------------------
      Total |      1,077      100.00

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