Frequencies for first 10,000 rows of comstat10 variable in namcs2014 dataset :

Composition status |
          code for |
    medication #10 |      Freq.     Percent        Cum.
-------------------+-----------------------------------
Single entity drug |        867        8.67        8.67
  Combination drug |         73        0.73        9.40
      Undetermined |         20        0.20        9.60
                 . |      9,040       90.40      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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