Frequencies for first 10,000 rows of prescr8 variable in namcs2004 dataset :

prescriptio |
   n status |
   code for |
 medication |
         #8 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        273        2.73        2.73
          2 |         41        0.41        3.14
          3 |         31        0.31        3.45
          . |      9,655       96.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016