Frequencies for first 10,000 rows of prescr5 variable in nhamcsed2009 dataset :

   for rx5, |
prescriptio |
   n status |
       code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        615        6.15        6.15
          2 |         37        0.37        6.52
          3 |         10        0.10        6.62
          5 |        162        1.62        8.24
          . |      9,176       91.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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