Frequencies for first 10,000 rows of rx2cat3 variable in namcs2008 dataset :

   for rx2, |
multum drug |
category #3 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,935       99.35       99.35
        185 |          2        0.02       99.37
        197 |         18        0.18       99.55
        203 |         38        0.38       99.93
        204 |          1        0.01       99.94
        265 |          1        0.01       99.95
        270 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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