Frequencies for first 10,000 rows of rx5cat3 variable in nhamcsopd2007 dataset :

   for rx5, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,974       99.74       99.74
        185 |          2        0.02       99.76
        197 |          7        0.07       99.83
        203 |         15        0.15       99.98
        270 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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