Frequencies for first 10,000 rows of rx3v2c2 variable in nhamcsopd2006 dataset :

        for rx3, level 2 of multum drug |
                            category #2 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
  Anti-infectives: antimalarial agents  |          6        0.06        0.06
Anti-infectives: miscellaneous antibiot |          3        0.03        0.09
          Anti-infectives: sulfanomides |         12        0.12        0.21
Antineoplastics: miscellaneous antineop |          1        0.01        0.22
       Cardiovascular agents: diuretics |          1        0.01        0.23
    Cardiovascular agents: vasodilators |          4        0.04        0.27
                        CNS: Analgesics |          1        0.01        0.28
                   CNS: Anticonvulsants |         71        0.71        0.99
CNS: Antiemetic/antivertigo agents: 5HT |         29        0.29        1.28
            CNS: Anti-Parkinson agents  |          2        0.02        1.30
Coagulation modifiers: antiplatelet age |         72        0.72        2.02
Gastrointestinal agents: H2 antagonists |          1        0.01        2.03
    Hormones: adrenal cortical steroids |         11        0.11        2.14
                 Hormones: sex hormones |          5        0.05        2.19
        Miscellaneous agents: antidotes |          1        0.01        2.20
Miscellaneous agents: local injectable  |         23        0.23        2.43
Miscellaneous agents: genitourinary tra |          4        0.04        2.47
Nutritional products: minerals and elec |          8        0.08        2.55
     Respiratory agents: antihistamines |         25        0.25        2.80
       Respiratory agents: antitussives |          4        0.04        2.84
      Respiratory agents: decongestants |          2        0.02        2.86
Respiratory agents: miscellaneous respi |         10        0.10        2.96
Respiratory agents: respiratory inhalan |          1        0.01        2.97
  Topical agents: dermatological agents |          7        0.07        3.04
  Topical agents: mouth and throat prod |          6        0.06        3.10
    Topical agents: vaginal preprations |          6        0.06        3.16
   Miscellaneous agents: antirheumatics |          9        0.09        3.25
Psychotherapeutic agents: antidepressan |          2        0.02        3.27
Psychotherapeutic agents: antipsychotic |          6        0.06        3.33
Metabolic agents: antihyperuricemic age |          7        0.07        3.40
Metabolic agents: glucose elevating age |          3        0.03        3.43
Cardiovascular agents: agents for pulmo |          4        0.04        3.47
Miscellaneous agents: smoking cessation |         19        0.19        3.66
Cardiovascular agents: aldosterone rece |          5        0.05        3.71
                                      . |      9,629       96.29      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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