Frequencies for first 10,000 rows of drug5cl3 variable in nhamcsed2004 dataset :

        drug class #3 for medication #5 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                         ace inhibitors |          5        0.05        0.05
                        anticonvulsants |          5        0.05        0.10
                           antipyretics |         16        0.16        0.26
         antiasthmatics/bronchodilators |          1        0.01        0.27
                         antihistamines |         30        0.30        0.57
                          cold remedies |          3        0.03        0.60
                          surgical aids |         16        0.16        0.76
                                      . |      9,924       99.24      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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