Mari S Gades1, Ashley Petersen2, Ellen Meier3, Bruce R Lindgren4, Richard J O'Connor5, Peter G Shields6, Dorothy Hatsukami4. 1. University of Minnesota, Department of Psychology, 75 E. River Road, Minneapolis, MN, 55454, United States. Electronic address: gades020@umn.edu. 2. University of Minnesota, School of Public Health Division of Biostatistics, 420 Delaware St. SE, Minneapolis, MN, 55455, United States. 3. University of Wisconsin Stevens Point, Department of Psychology, Science Building, Stevens Point, WI, United States. 4. University of Minnesota, Department of Psychiatry and Masonic Cancer Center, 717 Delaware St SE, Minneapolis, MN, 55414, United States. 5. Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States. 6. Ohio State University, Columbus, OH, United States.
Abstract
BACKGROUND: While a majority of cigarette smokers who use electronic cigarettes (e-cigarettes) choose to continue using cigarettes, completely switching to e-cigarettes is necessary to reduce tobacco-related harm. Whether specific subjective responses to e-cigarettes are associated with extent of smoking reduction and complete switching from cigarettes to e-cigarettes is unclear. This study determined whether initial subjective responses to e-cigarettes related to the successful substitution of e-cigarettes for cigarettes and extent of cigarette and e-cigarette use. METHODS: Adult cigarette smokers (N = 58) uninterested in quitting were asked to completely substitute their cigarettes with an e-cigarette (Vuse Solo) for 8 weeks. At week 1, subjective responses to e-cigarettes were measured using the Product Evaluation Scale and Drug Effects/Liking Survey. A Poisson regression examined whether any of these initial subjective responses were associated with smoke-free days, e-cigarette puffs, and cigarettes smoked between weeks 6 and 8 after adjustment for potential confounders. A logistic regression examined the relationship between subjective measures and exhaled carbon monoxide (CO) verified 7-day abstinence at week 8 after adjustment for potential confounders. RESULTS: Following Holm's p-value adjustment, e-cigarette liking and desire were associated with increased e-cigarette use (adjusted p < 0.01) and decreased cigarette use (adjusted p < 0.05). Measures of psychological reward and drug liking were associated with 7-day abstinence, however this association was no longer significant following p-value adjustment. CONCLUSIONS: Initial subjective responses were related to cigarette and e-cigarette use at weeks 6-8, but not smoke-free days or CO-verified 7-day abstinence.
BACKGROUND: While a majority of cigarette smokers who use electronic cigarettes (e-cigarettes) choose to continue using cigarettes, completely switching to e-cigarettes is necessary to reduce tobacco-related harm. Whether specific subjective responses to e-cigarettes are associated with extent of smoking reduction and complete switching from cigarettes to e-cigarettes is unclear. This study determined whether initial subjective responses to e-cigarettes related to the successful substitution of e-cigarettes for cigarettes and extent of cigarette and e-cigarette use. METHODS: Adult cigarette smokers (N = 58) uninterested in quitting were asked to completely substitute their cigarettes with an e-cigarette (Vuse Solo) for 8 weeks. At week 1, subjective responses to e-cigarettes were measured using the Product Evaluation Scale and Drug Effects/Liking Survey. A Poisson regression examined whether any of these initial subjective responses were associated with smoke-free days, e-cigarette puffs, and cigarettes smoked between weeks 6 and 8 after adjustment for potential confounders. A logistic regression examined the relationship between subjective measures and exhaled carbon monoxide (CO) verified 7-day abstinence at week 8 after adjustment for potential confounders. RESULTS: Following Holm's p-value adjustment, e-cigarette liking and desire were associated with increased e-cigarette use (adjusted p < 0.01) and decreased cigarette use (adjusted p < 0.05). Measures of psychological reward and drug liking were associated with 7-day abstinence, however this association was no longer significant following p-value adjustment. CONCLUSIONS: Initial subjective responses were related to cigarette and e-cigarette use at weeks 6-8, but not smoke-free days or CO-verified 7-day abstinence.
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