Frequencies for first 10,000 rows of prescr28 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
        #28 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          6        0.06        0.06
          5 |          2        0.02        0.08
          . |      9,992       99.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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