Frequencies for first 10,000 rows of rx1cat3 variable in nhamcsed2009 dataset :

   for rx1, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,721       97.21       97.21
        185 |          3        0.03       97.24
        197 |        124        1.24       98.48
        203 |        141        1.41       99.89
        204 |          4        0.04       99.93
        265 |          1        0.01       99.94
        270 |          1        0.01       99.95
        374 |          1        0.01       99.96
        430 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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