Frequencies for first 10,000 rows of prescr7 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
         #7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,112       11.12       11.12
          2 |         51        0.51       11.63
          3 |         28        0.28       11.91
          5 |        494        4.94       16.85
          . |      8,315       83.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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