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

    Alcohol |
Test Result |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,399       13.99       13.99
          1 |         26        0.26       14.25
          2 |         32        0.32       14.57
          3 |         46        0.46       15.03
          4 |         37        0.37       15.40
          5 |         43        0.43       15.83
          6 |         28        0.28       16.11
          7 |         43        0.43       16.54
          8 |         59        0.59       17.13
          9 |         52        0.52       17.65
         10 |         43        0.43       18.08
         11 |         59        0.59       18.67
         12 |         81        0.81       19.48
         13 |         70        0.70       20.18
         14 |         62        0.62       20.80
         15 |         81        0.81       21.61
         16 |         85        0.85       22.46
         17 |         77        0.77       23.23
         18 |         85        0.85       24.08
         19 |         69        0.69       24.77
         20 |         73        0.73       25.50
         21 |         80        0.80       26.30
         22 |         66        0.66       26.96
         23 |         56        0.56       27.52
         24 |         40        0.40       27.92
         25 |         43        0.43       28.35
         26 |         36        0.36       28.71
         27 |         31        0.31       29.02
         28 |         25        0.25       29.27
         29 |         22        0.22       29.49
         30 |         28        0.28       29.77
         31 |         23        0.23       30.00
         32 |         11        0.11       30.11
         33 |         16        0.16       30.27
         34 |         10        0.10       30.37
         35 |          4        0.04       30.41
         36 |          3        0.03       30.44
         37 |          1        0.01       30.45
         38 |          6        0.06       30.51
         39 |          3        0.03       30.54
         40 |          4        0.04       30.58
         41 |          1        0.01       30.59
         42 |          2        0.02       30.61
         43 |          1        0.01       30.62
         95 |          5        0.05       30.67
         96 |      5,765       57.65       88.32
         97 |        396        3.96       92.28
         99 |        772        7.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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