Frequencies for first 10,000 rows of rx5v2c3 variable in nhamcsopd2009 dataset :

   for rx5, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,973       99.73       99.73
        064 |         11        0.11       99.84
        065 |          6        0.06       99.90
        101 |          3        0.03       99.93
        265 |          3        0.03       99.96
        270 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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