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

    Alcohol |
 Test- Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,343       53.43       53.43
          1 |      3,622       36.22       89.65
          2 |         27        0.27       89.92
          3 |         20        0.20       90.12
          4 |         26        0.26       90.38
          5 |          9        0.09       90.47
          6 |          3        0.03       90.50
          7 |          6        0.06       90.56
          8 |         10        0.10       90.66
         10 |        202        2.02       92.68
         95 |        690        6.90       99.58
         98 |         31        0.31       99.89
         99 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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