Frequencies for first 10,000 rows of rx2v1c3 variable in nhamcsopd2011 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,897       98.97       98.97
        040 |          6        0.06       99.03
        057 |         83        0.83       99.86
        097 |          6        0.06       99.92
        105 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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