Page History

In this study, subjects were randomized to one of three nicotine dosage levels. At the baseline visit (Week 0), they receiving an ENDS  ENDS device that used  0, 8 or 24 mg/ml nicotine liquid. Self-reported daily cigarette consumption were recorded for each day of the study for 4 weeks. The subjects were supplied replacement nicotine cartridges at each weekly visit. The sponsor used an electronic diary application to track when the cartridge cartridges were replaced, and the daily number of cigarettes smoked. The subject used their normal brand cigarettes, and these were not supplied by the sponsor, and not considered a study product.  Each cartridge was 8 mL.  No other Nicotine replacement products were allowed to be used.  Multiple cartridges were dispensed at a visit.   

...

A Product Accountability domain was submitted to represent dispensed and returned amounts. Each cartridge had a uniquely assigned number. This unique number was represented in DAREFDAREFID. Multiple cartridges were dispensed at weekly visits, but each cartridge was tracked. At each weekly visit, all previously dispended cartridges were returned, and new cartridges dispensed.   Cartridges were replaced at each visit. DADTC are the visit dates when the cartridge was returned or dispensed.  Cartridges not used were record as having the full volume returned.    

 Since the data in Exposure as collected (EC) would be practically identically to the summarized EX domain, the sponsor did not submit the EC domain. The sponsor unblinded the study before creating the EX domain. The unblinded product name is provided in EXTRT, here a dummy name is used for the tobacco product.  

The domain represented the number of cartridges used (in this example always 1 since each cartridge was tracked), the total amount amount of liquid product used was determined from the DA domain and the associated nicotine pharmaceutical strength of each cartridge was known. The sponsored used this information in the analysis. The summaries included in the analysis  were the estimated number of cartridges used per week, and the estimated nicotine exposer exposure from the cartridges per day.    

...