Frequencies for first 10,000 rows of rx1v2c2 variable in nhamcsopd2006 dataset :

        for rx1, level 2 of multum drug |
                            category #2 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
           Anti-infectives: antifungals |          1        0.01        0.01
  Anti-infectives: antimalarial agents  |         15        0.15        0.16
      Anti-infectives: antiviral agents |          1        0.01        0.17
Anti-infectives: miscellaneous antibiot |         18        0.18        0.35
          Anti-infectives: sulfanomides |         68        0.68        1.03
Metabolic agents: antihyperlipidemia ag |          4        0.04        1.07
Antineoplastics: miscellaneous antineop |          3        0.03        1.10
       Cardiovascular agents: diuretics |          3        0.03        1.13
    Cardiovascular agents: vasodilators |          7        0.07        1.20
    Cardiovascular agents: vasopressors |          2        0.02        1.22
                   CNS: Anticonvulsants |         70        0.70        1.92
CNS: Antiemetic/antivertigo agents: 5HT |         25        0.25        2.17
Coagulation modifiers: antiplatelet age |         69        0.69        2.86
    Hormones: adrenal cortical steroids |         25        0.25        3.11
                 Hormones: sex hormones |         81        0.81        3.92
        Miscellaneous agents: antidotes |          1        0.01        3.93
Miscellaneous agents: local injectable  |         73        0.73        4.66
Miscellaneous agents: miscellaneous unc |          1        0.01        4.67
Miscellaneous agents: genitourinary tra |          1        0.01        4.68
Nutritional products: minerals and elec |         10        0.10        4.78
Nutritional products: vitamin and miner |          2        0.02        4.80
     Respiratory agents: antihistamines |         23        0.23        5.03
       Respiratory agents: antitussives |          8        0.08        5.11
      Respiratory agents: decongestants |          1        0.01        5.12
Respiratory agents: miscellaneous respi |          9        0.09        5.21
Respiratory agents: respiratory inhalan |          1        0.01        5.22
  Topical agents: dermatological agents |         30        0.30        5.52
  Topical agents: mouth and throat prod |          5        0.05        5.57
    Topical agents: vaginal preprations |          8        0.08        5.65
   Miscellaneous agents: antirheumatics |          6        0.06        5.71
Psychotherapeutic agents: antidepressan |          2        0.02        5.73
Psychotherapeutic agents: antipsychotic |          4        0.04        5.77
                       CNS: Anorexiants |          3        0.03        5.80
Gastrointestinal agents: 5-aminosalicyl |          2        0.02        5.82
Metabolic agents: antihyperuricemic age |         10        0.10        5.92
Metabolic agents: glucose elevating age |          1        0.01        5.93
Cardiovascular agents: agents for pulmo |          4        0.04        5.97
Miscellaneous agents: smoking cessation |         54        0.54        6.51
Cardiovascular agents: aldosterone rece |          6        0.06        6.57
                                      . |      9,343       93.43      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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