Frequencies for first 10,000 rows of rx6v1c3 variable in nhamcsed2012 dataset :

   For RX6, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,977       99.77       99.77
        040 |          2        0.02       99.79
        057 |         19        0.19       99.98
        105 |          1        0.01       99.99
        113 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016