Frequencies for first 10,000 rows of rx2cat3 variable in nhamcsed2006 dataset :

     for rx2, multum drug category #3 - |
                               detailed |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
respiratory agents: bronchodilators: ad |         16        0.16        0.16
cns: antiemetic/antivertigo agents: ant |         75        0.75        0.91
cns: anticonvulsants: miscellaneous ant |          1        0.01        0.92
miscellaneous agents: genitourinary tra |          3        0.03        0.95
                                      . |      9,905       99.05      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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