Frequencies for first 10,000 rows of rx1cat3 variable in nhamcsed2006 dataset :

     for rx1, multum drug category #3 - |
                               detailed |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
respiratory agents: bronchodilators: ad |         20        0.20        0.20
     hormones: sex hormones: progestins |          3        0.03        0.23
cns: antiemetic/antivertigo agents: ant |        126        1.26        1.49
miscellaneous agents: genitourinary tra |          1        0.01        1.50
                                      . |      9,850       98.50      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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