Frequencies for first 10,000 rows of prescr4 variable in namcs2015 dataset :

Prescriptio |
   n status |
   code for |
 medication |
         #4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,188       21.88       21.88
          2 |        141        1.41       23.29
          3 |         63        0.63       23.92
          5 |        808        8.08       32.00
          . |      6,800       68.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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