Frequencies for first 10,000 rows of prescr25 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
        #25 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         12        0.12        0.12
          2 |          1        0.01        0.13
          5 |          4        0.04        0.17
          . |      9,983       99.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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