Frequencies for first 10,000 rows of rx1cat4 variable in namcs2012 dataset :

   For RX1, |
MULTUM drug |
category #4 |
 - detailed |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,980       99.80       99.80
        205 |         11        0.11       99.91
        292 |          2        0.02       99.93
        445 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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