Frequencies for first 10,000 rows of rx8v2c1 variable in nhamcsed2006 dataset :

        for rx8, level 2 of multum drug |
                            category #1 |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
           anti-infectives: antifungals |          1        0.01        0.01
        anti-infectives: cephalosporins |          3        0.03        0.04
anti-infectives: miscellaneous antibiot |          3        0.03        0.07
metabolic agents: antihyperlipidemia ag |          5        0.05        0.12
antineoplastics: hormones/antineoplasti |          1        0.01        0.13
          immunological agents: toxoids |          1        0.01        0.14
cardiovascular agents: beta-adrenergic  |          1        0.01        0.15
cardiovascular agents: calcium channel  |          2        0.02        0.17
       cardiovascular agents: diuretics |          1        0.01        0.18
                        cns: analgesics |          6        0.06        0.24
cns: antiemetic/antivertigo agents: 5ht |          3        0.03        0.27
  coagulation modifiers: anticoagulants |          2        0.02        0.29
gastrointestinal agents: miscellaneous  |          1        0.01        0.30
    hormones: adrenal cortical steroids |          1        0.01        0.31
  metabolic agents: antidiabetic agents |          1        0.01        0.32
                hormones: thyroid drugs |          1        0.01        0.33
miscellaneous agents: miscellaneous unc |          2        0.02        0.35
nutritional products: minerals and elec |          5        0.05        0.40
    respiratory agents: bronchodilators |          1        0.01        0.41
respiratory agents: antiasthmatic combi |          1        0.01        0.42
topical agents: antiseptics and germici |          1        0.01        0.43
  topical agents: dermatological agents |          1        0.01        0.44
psychotherapeutic agents: antipsychotic |          1        0.01        0.45
                                      . |      9,955       99.55      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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