Frequencies for first 10,000 rows of ncmed17 variable in namcs2015 dataset :

         Is |
 Medication |
 #17 new or |
  continued |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |          2        0.02        0.02
         -7 |      9,873       98.73       98.75
          1 |          8        0.08       98.83
          2 |        117        1.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017