Frequencies for first 10,000 rows of rx5v2c3 variable in nhamcsopd2007 dataset :

   for rx5, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,974       99.74       99.74
        064 |         15        0.15       99.89
        065 |          7        0.07       99.96
        101 |          2        0.02       99.98
        270 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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