Frequencies for first 10,000 rows of prescr12 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
        #12 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        330        3.30        3.30
          2 |         19        0.19        3.49
          3 |          6        0.06        3.55
          5 |        154        1.54        5.09
          . |      9,491       94.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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