Frequencies for first 10,000 rows of prescr1 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
         #1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,442       54.42       54.42
          2 |        191        1.91       56.33
          3 |        177        1.77       58.10
          5 |      1,341       13.41       71.51
          . |      2,849       28.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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