Frequencies for first 10,000 rows of contsub8 variable in namcs2004 dataset :

 controlled |
status code |
        for |
 medication |
         #8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          6        0.06        0.06
          3 |          6        0.06        0.12
          4 |         16        0.16        0.28
          6 |        307        3.07        3.35
          7 |         10        0.10        3.45
          . |      9,655       96.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016