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

    Alcohol |
Test Result |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,403       14.03       14.03
          1 |         21        0.21       14.24
          2 |         37        0.37       14.61
          3 |         26        0.26       14.87
          4 |         25        0.25       15.12
          5 |         34        0.34       15.46
          6 |         37        0.37       15.83
          7 |         34        0.34       16.17
          8 |         38        0.38       16.55
          9 |         45        0.45       17.00
         10 |         37        0.37       17.37
         11 |         54        0.54       17.91
         12 |         45        0.45       18.36
         13 |         52        0.52       18.88
         14 |         71        0.71       19.59
         15 |         70        0.70       20.29
         16 |         69        0.69       20.98
         17 |         68        0.68       21.66
         18 |         72        0.72       22.38
         19 |         67        0.67       23.05
         20 |         66        0.66       23.71
         21 |         52        0.52       24.23
         22 |         64        0.64       24.87
         23 |         44        0.44       25.31
         24 |         53        0.53       25.84
         25 |         37        0.37       26.21
         26 |         43        0.43       26.64
         27 |         18        0.18       26.82
         28 |         21        0.21       27.03
         29 |         24        0.24       27.27
         30 |         11        0.11       27.38
         31 |         19        0.19       27.57
         32 |         16        0.16       27.73
         33 |         12        0.12       27.85
         34 |          8        0.08       27.93
         35 |          7        0.07       28.00
         36 |          2        0.02       28.02
         37 |          5        0.05       28.07
         38 |          6        0.06       28.13
         39 |          2        0.02       28.15
         43 |          3        0.03       28.18
         49 |          1        0.01       28.19
         50 |          1        0.01       28.20
         53 |          1        0.01       28.21
         57 |          1        0.01       28.22
         95 |          5        0.05       28.27
         96 |      6,081       60.81       89.08
         97 |        482        4.82       93.90
         99 |        610        6.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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