Frequencies for first 10,000 rows of rx3v1c3 variable in nhamcsed2011 dataset :

   For RX3, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,894       98.94       98.94
        040 |         10        0.10       99.04
        057 |         92        0.92       99.96
        097 |          1        0.01       99.97
        105 |          1        0.01       99.98
        113 |          1        0.01       99.99
        331 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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