Frequencies for first 10,000 rows of comstat27 variable in namcs2014 dataset :

Composition status |
          code for |
    medication #27 |      Freq.     Percent        Cum.
-------------------+-----------------------------------
Single entity drug |         13        0.13        0.13
  Combination drug |          2        0.02        0.15
                 . |      9,985       99.85      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017