Frequencies for first 10,000 rows of drug8cl3 variable in nhamcsed2004 dataset :

        drug class #3 for medication #8 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
        miscellaneous gastrointestinals |          1        0.01        0.01
                        anticonvulsants |          3        0.03        0.04
                           antipyretics |         10        0.10        0.14
                          antimalarials |          1        0.01        0.15
                         antihistamines |          1        0.01        0.16
                          surgical aids |          7        0.07        0.23
                                      . |      9,977       99.77      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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