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

    ALCOHOL |
       TEST |
    RESULTS |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,591       15.91       15.91
          1 |         24        0.24       16.15
          2 |         42        0.42       16.57
          3 |         18        0.18       16.75
          4 |         25        0.25       17.00
          5 |         20        0.20       17.20
          6 |         21        0.21       17.41
          7 |         28        0.28       17.69
          8 |         30        0.30       17.99
          9 |         33        0.33       18.32
         10 |         36        0.36       18.68
         11 |         28        0.28       18.96
         12 |         38        0.38       19.34
         13 |         32        0.32       19.66
         14 |         41        0.41       20.07
         15 |         44        0.44       20.51
         16 |         45        0.45       20.96
         17 |         40        0.40       21.36
         18 |         35        0.35       21.71
         19 |         30        0.30       22.01
         20 |         31        0.31       22.32
         21 |         39        0.39       22.71
         22 |         48        0.48       23.19
         23 |         27        0.27       23.46
         24 |         35        0.35       23.81
         25 |         28        0.28       24.09
         26 |         23        0.23       24.32
         27 |         24        0.24       24.56
         28 |         15        0.15       24.71
         29 |         18        0.18       24.89
         30 |         11        0.11       25.00
         31 |          8        0.08       25.08
         32 |          6        0.06       25.14
         33 |          1        0.01       25.15
         34 |          6        0.06       25.21
         35 |          5        0.05       25.26
         36 |          8        0.08       25.34
         37 |          4        0.04       25.38
         38 |          2        0.02       25.40
         39 |          2        0.02       25.42
         41 |          1        0.01       25.43
         46 |          1        0.01       25.44
         49 |          1        0.01       25.45
         51 |          1        0.01       25.46
         95 |         11        0.11       25.57
         96 |      5,851       58.51       84.08
         97 |        726        7.26       91.34
         99 |        866        8.66      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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