Frequencies for first 10,000 rows of rx7v2c1 variable in nhamcsed2006 dataset :

        for rx7, level 2 of multum drug |
                            category #1 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
            anti-infectives: amebicides |          3        0.03        0.03
      anti-infectives: antiviral agents |          1        0.01        0.04
        anti-infectives: cephalosporins |          3        0.03        0.07
 anti-infectives: macrolide derivatives |          3        0.03        0.10
anti-infectives: miscellaneous antibiot |          1        0.01        0.11
           anti-infectives: penicillins |          1        0.01        0.12
            anti-infectives: quinolones |          3        0.03        0.15
         anti-infectives: tetracyclines |          1        0.01        0.16
metabolic agents: antihyperlipidemia ag |          1        0.01        0.17
       antineoplastics: antimetabolites |          1        0.01        0.18
          immunological agents: toxoids |          2        0.02        0.20
cardiovascular agents: antianginal agen |          4        0.04        0.24
cardiovascular agents: antiarrhythmic a |          1        0.01        0.25
cardiovascular agents: beta-adrenergic  |          4        0.04        0.29
cardiovascular agents: calcium channel  |          1        0.01        0.30
       cardiovascular agents: diuretics |          2        0.02        0.32
 cardiovascular agents: intropic agents |          3        0.03        0.35
    cardiovascular agents: vasodilators |          1        0.01        0.36
cardiovascular agents: angiotensin ii i |          3        0.03        0.39
                        cns: analgesics |         21        0.21        0.60
                   cns: anticonvulsants |          1        0.01        0.61
cns: antiemetic/antivertigo agents: 5ht |          3        0.03        0.64
            cns: anti-parkinson agents  |          1        0.01        0.65
cns: anxiolytics, sedatives, and hypnot |          6        0.06        0.71
                  cns: muscle relaxants |          3        0.03        0.74
  coagulation modifiers: anticoagulants |          4        0.04        0.78
coagulation modifiers: antiplatelet age |          4        0.04        0.82
      gastrointestinal agents: antacids |          1        0.01        0.83
 gastrointestinal agents: gi stimulants |          3        0.03        0.86
gastrointestinal agents: h2 antagonists |          3        0.03        0.89
    hormones: adrenal cortical steroids |          2        0.02        0.91
  metabolic agents: antidiabetic agents |          3        0.03        0.94
                 hormones: sex hormones |          1        0.01        0.95
immunological agents: immunosuppressive |          1        0.01        0.96
miscellaneous agents: miscellaneous unc |          1        0.01        0.97
miscellaneous agents: genitourinary tra |          1        0.01        0.98
nutritional products: minerals and elec |          4        0.04        1.02
         nutritional products: vitamins |          1        0.01        1.03
     respiratory agents: antihistamines |          2        0.02        1.05
    respiratory agents: bronchodilators |          1        0.01        1.06
  topical agents: dermatological agents |          2        0.02        1.08
   miscellaneous agents: antirheumatics |          1        0.01        1.09
               hormones: biphosphonates |          1        0.01        1.10
psychotherapeutic agents: antidepressan |          2        0.02        1.12
psychotherapeutic agents: antipsychotic |          2        0.02        1.14
gastrointestinal agents: proton pump in |          1        0.01        1.15
                                      . |      9,885       98.85      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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