Frequencies for first 10,000 rows of comstat23 variable in namcs2014 dataset :

Composition status |
          code for |
    medication #23 |      Freq.     Percent        Cum.
-------------------+-----------------------------------
Single entity drug |         36        0.36        0.36
  Combination drug |          2        0.02        0.38
                 . |      9,962       99.62      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

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