Frequencies for first 10,000 rows of contsub4 variable in namcs2001 dataset :

 controlled |
status code |
        for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          9        0.09        0.09
          3 |          8        0.08        0.17
          4 |         48        0.48        0.65
          5 |          2        0.02        0.67
          6 |        902        9.02        9.69
          7 |         15        0.15        9.84
          . |      9,016       90.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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