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

    Alcohol |
Test Result |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,467       14.67       14.67
          1 |         29        0.29       14.96
          2 |         47        0.47       15.43
          3 |         31        0.31       15.74
          4 |         40        0.40       16.14
          5 |         41        0.41       16.55
          6 |         36        0.36       16.91
          7 |         43        0.43       17.34
          8 |         40        0.40       17.74
          9 |         55        0.55       18.29
         10 |         38        0.38       18.67
         11 |         48        0.48       19.15
         12 |         56        0.56       19.71
         13 |         74        0.74       20.45
         14 |         69        0.69       21.14
         15 |         72        0.72       21.86
         16 |         74        0.74       22.60
         17 |         61        0.61       23.21
         18 |         73        0.73       23.94
         19 |         61        0.61       24.55
         20 |         64        0.64       25.19
         21 |         76        0.76       25.95
         22 |         55        0.55       26.50
         23 |         52        0.52       27.02
         24 |         52        0.52       27.54
         25 |         54        0.54       28.08
         26 |         34        0.34       28.42
         27 |         35        0.35       28.77
         28 |         29        0.29       29.06
         29 |         19        0.19       29.25
         30 |         13        0.13       29.38
         31 |         14        0.14       29.52
         32 |         15        0.15       29.67
         33 |          8        0.08       29.75
         34 |         10        0.10       29.85
         35 |          8        0.08       29.93
         36 |          4        0.04       29.97
         37 |          4        0.04       30.01
         38 |          7        0.07       30.08
         39 |          4        0.04       30.12
         40 |          2        0.02       30.14
         41 |          2        0.02       30.16
         42 |          2        0.02       30.18
         43 |          1        0.01       30.19
         44 |          1        0.01       30.20
         45 |          1        0.01       30.21
         56 |          1        0.01       30.22
         59 |          1        0.01       30.23
         95 |          3        0.03       30.26
         96 |      5,959       59.59       89.85
         97 |        493        4.93       94.78
         99 |        522        5.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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