Frequencies for first 10,000 rows of rx2v2c3 variable in nhamcsed2008 dataset :

   for rx2, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,839       98.39       98.39
        064 |         66        0.66       99.05
        065 |         87        0.87       99.92
        101 |          4        0.04       99.96
        113 |          2        0.02       99.98
        136 |          1        0.01       99.99
        332 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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