Frequencies for first 10,000 rows of rx7v3c1 variable in nhamcsed2006 dataset :

        for rx7, level 3 of multum drug |
                            category #1 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
cns: analgesics: miscellaneous analgesi |          3        0.03        0.03
              cns: analgesics: narcotic |          4        0.04        0.07
                 cns: analgesics: nsaid |          3        0.03        0.10
cns: analgesics: analgesic combinations |          1        0.01        0.11
cns: anxiolytics, sedatives, hypnotics: |          5        0.05        0.16
cns: anxiolytics, sedatives, hypnotics: |          1        0.01        0.17
cns: muscle relaxants: neuromuscular bl |          1        0.01        0.18
psychotherapeutic agents: antipsychotic |          2        0.02        0.20
 hormones: sex hormones: contraceptives |          1        0.01        0.21
topical agents: dermatological agents:  |          1        0.01        0.22
cardiovascular agents: diuretics: thiaz |          1        0.01        0.23
cardiovascular agents: diuretics: misce |          1        0.01        0.24
anti-infectives: cephalosporins: third  |          3        0.03        0.27
metabolic agents: antihyperlipidemic ag |          1        0.01        0.28
cns: muscle relaxants: skeletal muscle  |          2        0.02        0.30
respiratory agents: bronchodilators: ad |          1        0.01        0.31
cns: analgesics: narcotic analgesic com |         10        0.10        0.41
cns: antiemetic/antivertigo agents: 5ht |          2        0.02        0.43
cns: antiemetic/antivertigo agents: phe |          1        0.01        0.44
cns: anticonvulsants: miscellaneous ant |          1        0.01        0.45
cns: anti-parkinson agents: anticholine |          1        0.01        0.46
psychotherapeutic agents: antidepressan |          1        0.01        0.47
coagulation modifiers: antiplatelet age |          3        0.03        0.50
coagulation modifiers: antiplatelet age |          1        0.01        0.51
metabolic agents: antidiabetic agents:  |          2        0.02        0.53
anti-infectives: penicillins: beta-lact |          1        0.01        0.54
anti-infectives: antiviral agents: puri |          1        0.01        0.55
coagulation modifiers: anticoagulants:  |          3        0.03        0.58
coagulation modifiers: anticoagulants:  |          1        0.01        0.59
miscellaneous agents: genitourinary tra |          1        0.01        0.60
metabolic agents: antidiabetic agents:  |          1        0.01        0.61
cardiovas agents: beta-adrenergic block |          4        0.04        0.65
topical agents: dermatological agents:  |          1        0.01        0.66
hormones: adrenal cortical steroids: gl |          2        0.02        0.68
anti-infectives: macrolide derivatives: |          3        0.03        0.71
psychotherapeutic agents: antidepressan |          1        0.01        0.72
                                      . |      9,928       99.28      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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