Frequencies for first 10,000 rows of rx4cat2 variable in nhamcsed2006 dataset :

     for rx4, multum drug category #2 - |
                               detailed |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
anti-infectives: miscellaneous antibiot |         11        0.11        0.11
          anti-infectives: sulfanomides |          4        0.04        0.15
    cardiovascular agents: vasodilators |         15        0.15        0.30
    cardiovascular agents: vasopressors |          2        0.02        0.32
miscellaneous agents: local injectable  |         14        0.14        0.46
nutritional products: minerals and elec |          4        0.04        0.50
     respiratory agents: antihistamines |         19        0.19        0.69
       respiratory agents: antitussives |          9        0.09        0.78
respiratory agents: miscellaneous respi |         23        0.23        1.01
topical agents: dermatological agents:  |          6        0.06        1.07
   miscellaneous agents: antirheumatics |          1        0.01        1.08
cns: antiemetic/antivertigo agents: phe |         41        0.41        1.49
cns: antiemetic/antivertigo agents: mis |         14        0.14        1.63
cns: anticonvulsants: barbiturate antic |          1        0.01        1.64
cns: anticonvulsants: benzodiazepine an |         30        0.30        1.94
psychotherapeutic agents: antipsychotic |          5        0.05        1.99
coagulation modifiers: antiplatelet age |          7        0.07        2.06
anti-infectives: antimalarial agents: a |          1        0.01        2.07
anti-infectives: antimalarial agents: m |          5        0.05        2.12
                                      . |      9,788       97.88      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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