Frequencies for first 10,000 rows of prescr8 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
         #8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        887        8.87        8.87
          2 |         45        0.45        9.32
          3 |         25        0.25        9.57
          5 |        374        3.74       13.31
          . |      8,669       86.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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