Frequencies for first 10,000 rows of rx2v1c3 variable in nhamcsed2012 dataset :

   For RX2, |
 level 1 of |
MULTUM drug |
category #3 |
     (broad |
     level) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,818       98.18       98.18
        040 |         14        0.14       98.32
        057 |        165        1.65       99.97
        097 |          2        0.02       99.99
        113 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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