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

  Drug Test |
    -Status |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,788       57.88       57.88
          1 |          4        0.04       57.92
          2 |      3,385       33.85       91.77
          8 |        812        8.12       99.89
          9 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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