Frequencies for first 10,000 rows of prescr23 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
        #23 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         15        0.15        0.15
          2 |          2        0.02        0.17
          5 |          8        0.08        0.25
          . |      9,975       99.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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