Introduction Electronic cigarette (e-cigarette) designs may be described as “closed” or “open.” Closed systems are disposable or reloadable with prefilled cartridges (cigalikes). Open systems feature a prominent chamber (tank), refillable with e-liquid. This study examined user design preference and its association with smoking cessation. Methods A probability sample of current e-cigarette users (n=923) among adult ever smokers (n=6,560) in the U.S. was surveyed online between February 28 and March 31, 2014 and analyzed in September 2014. Photos of e-cigarette devices were presented alongside survey questions to facilitate respondents’ understanding of the questions. Results Most e-cigarette users were exclusive users of one design: 51.4% used only closed systems and 41.1% used only open systems, with 7.4% using both. Former smokers were more likely to use open systems than current smokers (53.8% vs 35.2%, p=0.002). Current smokers who attempted to quit in the last 12 months were more likely to use open systems than those who did not (41.4% vs 27.7%, p=0.029). Open system users were more likely than closed system users to use e-cigarettes daily (50.2% vs 22.9%, p<0.0001). Open system users were less likely to report their devices resembled (3.1% vs 73.0%, p<0.0001) or tasted like (29.1% vs 53.3%, p<0.0001) a cigarette, but were more likely to report their devices satisfied cravings than closed system users (82.8% vs 67.2%, p=0.001). Conclusions Preference of e-cigarette design is associated with smoking cessation. A device’s ability to deliver more nicotine and its flexibility in use might contribute to users’ success in quitting smoking.
Introduction: Asian immigrants to the U.S. smoke at higher rates than U.S.-born Asians. However, few programs exist to help these immigrants quit and little is known about their real-world effectiveness. The Centers for Disease Control and Prevention funded the Asian Smokers' Quitline to serve Chinese, Korean, and Vietnamese immigrants nationwide. This study examines service utilization and outcomes from the first 7 years of the program.
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