Frequencies for first 10,000 rows of prescr18 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
        #18 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         63        0.63        0.63
          2 |          2        0.02        0.65
          3 |          1        0.01        0.66
          5 |         29        0.29        0.95
          . |      9,905       99.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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