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

    Alcohol |
 Test- Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,514       55.14       55.14
          1 |      3,653       36.53       91.67
          2 |         38        0.38       92.05
          3 |         19        0.19       92.24
          4 |         15        0.15       92.39
          5 |          5        0.05       92.44
          7 |          4        0.04       92.48
          8 |         10        0.10       92.58
         10 |        175        1.75       94.33
         95 |        520        5.20       99.53
         98 |         24        0.24       99.77
         99 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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