Frequencies for first 10,000 rows of comstat18 variable in nhamcsed2015 dataset

Composition status |
          code for |
    medication #18 |      Freq.     Percent        Cum.
-------------------+-----------------------------------
Single entity drug |         39        0.39        0.39
  Combination drug |          2        0.02        0.41
      Undetermined |          1        0.01        0.42
                 . |      9,958       99.58      100.00
-------------------+-----------------------------------
             Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017