Frequencies for first 10,000 rows of prescr5 variable in namcs2005 dataset :

prescriptio |
   n status |
   code for |
     med #5 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,268       12.68       12.68
          2 |        161        1.61       14.29
          3 |        105        1.05       15.34
          . |      8,466       84.66      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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