Frequencies for first 10,000 rows of rx6v1c3 variable in nhamcsopd2011 dataset :

   For RX6, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,985       99.85       99.85
        057 |         10        0.10       99.95
        097 |          1        0.01       99.96
        105 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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