Frequencies for first 10,000 rows of rx5v3c1 variable in nhamcsed2006 dataset :

        for rx5, level 3 of multum drug |
                            category #1 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
cns: analgesics: miscellaneous analgesi |         17        0.17        0.17
              cns: analgesics: narcotic |         42        0.42        0.59
                 cns: analgesics: nsaid |         34        0.34        0.93
           cns: analgesics: salicylates |         11        0.11        1.04
cns: analgesics: analgesic combinations |          1        0.01        1.05
cns: anxiolytics, sedatives, hypnotics: |         15        0.15        1.20
cns: anxiolytics, sedatives, hypnotics: |          9        0.09        1.29
gastrointestinal agents: functional bow |          5        0.05        1.34
respiratory agents: bronchodilators: me |          1        0.01        1.35
topical agents: dermatological agents:  |          4        0.04        1.39
topical agents: dermatological agents:  |          1        0.01        1.40
cardiovascular agents: diuretics: loop  |          6        0.06        1.46
cardiovascular agents: diuretics: thiaz |          3        0.03        1.49
cardiovascular agents: diuretics: misce |          1        0.01        1.50
anti-infectives: cephalosporins: first  |         13        0.13        1.63
anti-infectives: cephalosporins: second |          3        0.03        1.66
anti-infectives: cephalosporins: third  |          7        0.07        1.73
metabolic agents: antihyperlipidemic ag |          1        0.01        1.74
cns: muscle relaxants: skeletal muscle  |         11        0.11        1.85
respiratory agents: bronchodilators: ad |          6        0.06        1.91
respiratory agents: bronchodilators: br |          4        0.04        1.95
cns: analgesics: narcotic analgesic com |         44        0.44        2.39
   cns: analgesics: antimigraine agents |          1        0.01        2.40
cns: antiemetic/antivertigo agents: 5ht |         10        0.10        2.50
cns: antiemetic/antivertigo agents: phe |          3        0.03        2.53
cns: antiemetic/antivertigo agents: ant |          2        0.02        2.55
cns: anticonvulsants: miscellaneous ant |          1        0.01        2.56
coagulation modifiers: antiplatelet age |          2        0.02        2.58
coagulation modifiers: antiplatelet age |          1        0.01        2.59
metabolic agents: antidiabetic agents:  |          2        0.02        2.61
metabolic agents: antidiabetic agents:  |          5        0.05        2.66
anti-infectives: penicillins: aminopeni |          4        0.04        2.70
anti-infectives: penicillins: beta-lact |          5        0.05        2.75
anti-infectives: penicillins: natural p |          1        0.01        2.76
anti-infectives: antiviral agents: adam |          1        0.01        2.77
topical agents: nasal preparations: nas |          3        0.03        2.80
coagulation modifiers: anticoagulants:  |          6        0.06        2.86
cardiovas agents: beta-adrenergic block |          6        0.06        2.92
cardiovas agents: beta-adrenergic block |          1        0.01        2.93
anti-infectives: antiviral agents: neur |          1        0.01        2.94
topical agents: ophthalmic preparations |          1        0.01        2.95
respiratory agents: respiratory inhalan |          2        0.02        2.97
respiratory agents: bronchodilators: an |          8        0.08        3.05
hormones: adrenal cortical steroids: gl |         21        0.21        3.26
anti-infectives: macrolide derivatives: |          7        0.07        3.33
psychotherapeutic agents: antidepressan |          1        0.01        3.34
psychotherapeutic agents: antipsychotic |          2        0.02        3.36
                                      . |      9,664       96.64      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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