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

    Alcohol |
Test Result |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,280       12.80       12.80
          1 |         30        0.30       13.10
          2 |         61        0.61       13.71
          3 |         40        0.40       14.11
          4 |         35        0.35       14.46
          5 |         55        0.55       15.01
          6 |         51        0.51       15.52
          7 |         53        0.53       16.05
          8 |         58        0.58       16.63
          9 |         47        0.47       17.10
         10 |         61        0.61       17.71
         11 |         77        0.77       18.48
         12 |         81        0.81       19.29
         13 |         87        0.87       20.16
         14 |         65        0.65       20.81
         15 |         84        0.84       21.65
         16 |         82        0.82       22.47
         17 |         82        0.82       23.29
         18 |         78        0.78       24.07
         19 |         79        0.79       24.86
         20 |         77        0.77       25.63
         21 |         55        0.55       26.18
         22 |         58        0.58       26.76
         23 |         58        0.58       27.34
         24 |         38        0.38       27.72
         25 |         47        0.47       28.19
         26 |         36        0.36       28.55
         27 |         30        0.30       28.85
         28 |         31        0.31       29.16
         29 |         19        0.19       29.35
         30 |         22        0.22       29.57
         31 |         19        0.19       29.76
         32 |          6        0.06       29.82
         33 |         11        0.11       29.93
         34 |          5        0.05       29.98
         35 |         11        0.11       30.09
         36 |          6        0.06       30.15
         37 |          3        0.03       30.18
         38 |          7        0.07       30.25
         39 |          3        0.03       30.28
         40 |          2        0.02       30.30
         41 |          1        0.01       30.31
         44 |          1        0.01       30.32
         45 |          1        0.01       30.33
         47 |          1        0.01       30.34
         48 |          2        0.02       30.36
         52 |          1        0.01       30.37
         95 |          6        0.06       30.43
         96 |      5,513       55.13       85.56
         97 |        379        3.79       89.35
         99 |      1,065       10.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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