Frequencies for first 10,000 rows of prescr5 variable in namcs2000 dataset :

prescriptio |
   n status |
   code for |
 medication |
         #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        570        5.70        5.70
          2 |         81        0.81        6.51
          3 |         57        0.57        7.08
          . |      9,292       92.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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