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

    ALCOHOL |
       TEST |
    RESULTS |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,914       19.14       19.14
          1 |         21        0.21       19.35
          2 |         41        0.41       19.76
          3 |         30        0.30       20.06
          4 |         29        0.29       20.35
          5 |         16        0.16       20.51
          6 |         31        0.31       20.82
          7 |         20        0.20       21.02
          8 |         27        0.27       21.29
          9 |         29        0.29       21.58
         10 |         41        0.41       21.99
         11 |         51        0.51       22.50
         12 |         41        0.41       22.91
         13 |         48        0.48       23.39
         14 |         35        0.35       23.74
         15 |         40        0.40       24.14
         16 |         40        0.40       24.54
         17 |         44        0.44       24.98
         18 |         57        0.57       25.55
         19 |         48        0.48       26.03
         20 |         53        0.53       26.56
         21 |         53        0.53       27.09
         22 |         44        0.44       27.53
         23 |         41        0.41       27.94
         24 |         26        0.26       28.20
         25 |         39        0.39       28.59
         26 |         22        0.22       28.81
         27 |         22        0.22       29.03
         28 |         25        0.25       29.28
         29 |         20        0.20       29.48
         30 |         22        0.22       29.70
         31 |         10        0.10       29.80
         32 |         10        0.10       29.90
         33 |          9        0.09       29.99
         34 |         10        0.10       30.09
         35 |          7        0.07       30.16
         36 |          2        0.02       30.18
         37 |          4        0.04       30.22
         38 |          8        0.08       30.30
         39 |          2        0.02       30.32
         40 |          4        0.04       30.36
         41 |          1        0.01       30.37
         43 |          2        0.02       30.39
         45 |          2        0.02       30.41
         49 |          1        0.01       30.42
         52 |          1        0.01       30.43
         95 |          9        0.09       30.52
         96 |      5,933       59.33       89.85
         97 |        456        4.56       94.41
         98 |          1        0.01       94.42
         99 |        558        5.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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