Frequencies for first 10,000 rows of rx2v2c3 variable in nhamcsed2009 dataset :

   for rx2, |
 level 2 of |
multum drug |
category #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,829       98.29       98.29
        064 |         81        0.81       99.10
        065 |         86        0.86       99.96
        265 |          1        0.01       99.97
        332 |          1        0.01       99.98
        430 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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