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

    Alcohol |
       Test |
    Results |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        823        8.23        8.23
          1 |         19        0.19        8.42
          2 |         33        0.33        8.75
          3 |         28        0.28        9.03
          4 |         30        0.30        9.33
          5 |         16        0.16        9.49
          6 |         32        0.32        9.81
          7 |         28        0.28       10.09
          8 |         37        0.37       10.46
          9 |         45        0.45       10.91
         10 |         46        0.46       11.37
         11 |         43        0.43       11.80
         12 |         40        0.40       12.20
         13 |         51        0.51       12.71
         14 |         55        0.55       13.26
         15 |         52        0.52       13.78
         16 |         53        0.53       14.31
         17 |         61        0.61       14.92
         18 |         68        0.68       15.60
         19 |         65        0.65       16.25
         20 |         59        0.59       16.84
         21 |         48        0.48       17.32
         22 |         50        0.50       17.82
         23 |         36        0.36       18.18
         24 |         36        0.36       18.54
         25 |         24        0.24       18.78
         26 |         29        0.29       19.07
         27 |         25        0.25       19.32
         28 |         15        0.15       19.47
         29 |         11        0.11       19.58
         30 |         17        0.17       19.75
         31 |          6        0.06       19.81
         32 |         11        0.11       19.92
         33 |          7        0.07       19.99
         34 |          6        0.06       20.05
         35 |          9        0.09       20.14
         36 |          1        0.01       20.15
         37 |          5        0.05       20.20
         38 |          1        0.01       20.21
         39 |          5        0.05       20.26
         40 |          3        0.03       20.29
         48 |          1        0.01       20.30
         95 |          8        0.08       20.38
         96 |      5,736       57.36       77.74
         97 |        559        5.59       83.33
         99 |      1,667       16.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016