Nicotine - Addiction/Dependence: Difference between revisions

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===2023 [https://pubmed.ncbi.nlm.nih.gov/36994368/ Shiffman S, Goldenson NI. Changes in dependence over one year among US adults who smoke cigarettes and switched completely or partially to use of the JUUL-brand electronic nicotine delivery system. Drug Alcohol Depend Rep. 2023 Jan 26;6:100137. doi: 10.1016/j.dadr.2023.100137. PMID: 36994368; PMCID: PMC10040328.]===
===2023 [https://pubmed.ncbi.nlm.nih.gov/36994368/ Shiffman S, Goldenson NI. Changes in dependence over one year among US adults who smoke cigarettes and switched completely or partially to use of the JUUL-brand electronic nicotine delivery system. Drug Alcohol Depend Rep. 2023 Jan 26;6:100137. doi: 10.1016/j.dadr.2023.100137. PMID: 36994368; PMCID: PMC10040328.]===
*Conclusion: "In this longitudinal study of US adults who smoked cigarettes and switched completely or partially to JUUL, dependence on JUUL was lower than baseline dependence on cigarettes after a year of JUUL use among participants who smoked every day at baseline. Observed increases in JUUL dependence over 12 months of JUUL use were statistically significant but small in magnitude—lower than the estimated minimal important difference—suggesting that dependence on JUUL did not meaningfully increase over a 1-year period. Additional longitudinal data over longer periods of time is needed to more completely address trajectories of dependence on ENDS, including JUUL."
*Conclusion: "In this longitudinal study of US adults who smoked cigarettes and switched completely or partially to JUUL, dependence on JUUL was lower than baseline dependence on cigarettes after a year of JUUL use among participants who smoked every day at baseline. Observed increases in JUUL dependence over 12 months of JUUL use were statistically significant but small in magnitude—lower than the estimated minimal important difference—suggesting that dependence on JUUL did not meaningfully increase over a 1-year period. Additional longitudinal data over longer periods of time is needed to more completely address trajectories of dependence on ENDS, including JUUL."
*Citation: Shiffman S, Goldenson NI. Changes in dependence over one year among US adults who smoke cigarettes and switched completely or partially to use of the JUUL-brand electronic nicotine delivery system. Drug Alcohol Depend Rep. 2023 Jan 26;6:100137. doi: 10.1016/j.dadr.2023.100137. PMID: 36994368; PMCID: PMC10040328.
**Citation: Shiffman S, Goldenson NI. Changes in dependence over one year among US adults who smoke cigarettes and switched completely or partially to use of the JUUL-brand electronic nicotine delivery system. Drug Alcohol Depend Rep. 2023 Jan 26;6:100137. doi: 10.1016/j.dadr.2023.100137. PMID: 36994368; PMCID: PMC10040328.
*Acknowledgment: The study was funded by Juul Labs, Inc. SS is a senior advisor to PinneyAssociates, Inc, through which he provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. NIG is a full-time employee of Juul Labs, Inc. The authors would like to acknowledge the Centre for Substance Use Research (CSUR), an independent research consultancy, for designing the ADJUSST study and collecting the data used in this manuscript.
***Acknowledgment: The study was funded by Juul Labs, Inc. SS is a senior advisor to PinneyAssociates, Inc, through which he provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. NIG is a full-time employee of Juul Labs, Inc. The authors would like to acknowledge the Centre for Substance Use Research (CSUR), an independent research consultancy, for designing the ADJUSST study and collecting the data used in this manuscript.


===2021 [https://onlinelibrary.wiley.com/doi/10.1111/add.15403 Dependence on nicotine in US high school students in the context of changing patterns of tobacco product use]===  
===2021 [https://onlinelibrary.wiley.com/doi/10.1111/add.15403 Dependence on nicotine in US high school students in the context of changing patterns of tobacco product use]===  
*Among US high school students, increases in the prevalence of nicotine product use from 2012 to 2019 do not appear to have been accompanied by a similar increase in the population burden of nicotine dependence. This may be at least partly attributable to a shift in the most common product of choice from cigarettes (on which users are most dependent) to e-cigarettes (on which users are least dependent).
*Among US high school students, increases in the prevalence of nicotine product use from 2012 to 2019 do not appear to have been accompanied by a similar increase in the population burden of nicotine dependence. This may be at least partly attributable to a shift in the most common product of choice from cigarettes (on which users are most dependent) to e-cigarettes (on which users are least dependent).
*[https://onlinelibrary.wiley.com/doi/epdf/10.1111/add.15403 PDF Version]
*[https://onlinelibrary.wiley.com/doi/epdf/10.1111/add.15403 PDF Version]
*Citation: Jackson, S. E., Brown, J., and Jarvis, M. J. (2021) Dependence on nicotine in US high school students in the context of changing patterns of tobacco product use. Addiction, 116: 1859– 1870. doi: 10.1111/add.15403
**Citation: Jackson, S. E., Brown, J., and Jarvis, M. J. (2021) Dependence on nicotine in US high school students in the context of changing patterns of tobacco product use. Addiction, 116: 1859– 1870. doi: 10.1111/add.15403
*Acknowledgement: Cancer Research UK (C1417/A22962) supported S.J. andJ.B.’s salaries.*
***Acknowledgement: Cancer Research UK (C1417/A22962) supported S.J. andJ.B.’s salaries.*


===2021 [https://pubmed.ncbi.nlm.nih.gov/33894800/ Changes in Dependence as Smokers Switch from Cigarettes to JUUL in Two Nicotine Concentrations]===
===2021 [https://pubmed.ncbi.nlm.nih.gov/33894800/ Changes in Dependence as Smokers Switch from Cigarettes to JUUL in Two Nicotine Concentrations]===
*Conclusions: Dependence decreased as smokers transitioned from smoking to exclusive use of JUUL, similarly for users of both nicotine concentrations. Smokers who switch to JUUL may reduce their nicotine dependence.
*Conclusions: Dependence decreased as smokers transitioned from smoking to exclusive use of JUUL, similarly for users of both nicotine concentrations. Smokers who switch to JUUL may reduce their nicotine dependence.
*Citation: Shiffman S, Goldenson NI, Hatcher C, Augustson EM. Changes in Dependence as Smokers Switch from Cigarettes to JUUL in Two Nicotine Concentrations. Am J Health Behav. 2021 May 1;45(3):563-575. doi: 10.5993/AJHB.45.3.10. PMID: 33894800.
**Citation: Shiffman S, Goldenson NI, Hatcher C, Augustson EM. Changes in Dependence as Smokers Switch from Cigarettes to JUUL in Two Nicotine Concentrations. Am J Health Behav. 2021 May 1;45(3):563-575. doi: 10.5993/AJHB.45.3.10. PMID: 33894800.
*Acknowledgement: NIG, CH, and EMA are full-time employees of Juul Labs Inc. Through Pinney Associates, SS provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs Inc. Within the last 2 years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. Under contract to JUUL Labs Inc, the Centre for Substance Use Research, an independent research consultancy, designed the study and assessments and oversaw collection of data through Dacima, Inc. CSUR managed, cleaned, and summarized the data. CH performed the statistical analyses under the direction of SS and NG. All of the authors contributed to writing and review of the paper, and had access to the data. The sponsor approved the research plan and provided comment on a nearfinal draft of the paper. Funding for this study was provided by Juul Labs Inc.
***Acknowledgement: NIG, CH, and EMA are full-time employees of Juul Labs Inc. Through Pinney Associates, SS provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs Inc. Within the last 2 years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. Under contract to JUUL Labs Inc, the Centre for Substance Use Research, an independent research consultancy, designed the study and assessments and oversaw collection of data through Dacima, Inc. CSUR managed, cleaned, and summarized the data. CH performed the statistical analyses under the direction of SS and NG. All of the authors contributed to writing and review of the paper, and had access to the data. The sponsor approved the research plan and provided comment on a nearfinal draft of the paper. Funding for this study was provided by Juul Labs Inc.


===2020 [https://pubmed.ncbi.nlm.nih.gov/33176942/ Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers]===  
===2020 [https://pubmed.ncbi.nlm.nih.gov/33176942/ Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers]===  
*Conclusions: Controlled use of JS among adult smokers resulted in nicotine delivery, product liking, and satisfaction that were less than that of combustible cigarettes but generally greater than nicotine gum. These results support the conclusion that JS has lower abuse liability than combustible cigarettes, higher abuse liability than nicotine gum, and may provide sufficient nicotine delivery and satisfying effects to support substitution for combustible cigarettes among adult smokers.
*Conclusions: Controlled use of JS among adult smokers resulted in nicotine delivery, product liking, and satisfaction that were less than that of combustible cigarettes but generally greater than nicotine gum. These results support the conclusion that JS has lower abuse liability than combustible cigarettes, higher abuse liability than nicotine gum, and may provide sufficient nicotine delivery and satisfying effects to support substitution for combustible cigarettes among adult smokers.
*Citation: Goldenson NI, Buchhalter AR, Augustson EM, Rubinstein ML, Henningfield JE. Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers. Drug Alcohol Depend. 2020 Dec 1;217:108395. doi: 10.1016/j.drugalcdep.2020.108395. Epub 2020 Nov 4. PMID: 33176942.
**Citation: Goldenson NI, Buchhalter AR, Augustson EM, Rubinstein ML, Henningfield JE. Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers. Drug Alcohol Depend. 2020 Dec 1;217:108395. doi: 10.1016/j.drugalcdep.2020.108395. Epub 2020 Nov 4. PMID: 33176942.
*Acknowledgment: The study was funded by Juul Labs, Inc. NIG, EMA and MLR are full-time employees of Juul Labs, Inc., JEH and ARB are full-time employees of PinneyAssociates, Inc. PinneyAssociates provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. Within the last two years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. JEH co-holds a patent for a novel nicotine medication that has not been developed or commercialized. There are no other interests declared by authors.
***Acknowledgment: The study was funded by Juul Labs, Inc. NIG, EMA and MLR are full-time employees of Juul Labs, Inc., JEH and ARB are full-time employees of PinneyAssociates, Inc. PinneyAssociates provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. Within the last two years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. JEH co-holds a patent for a novel nicotine medication that has not been developed or commercialized. There are no other interests declared by authors.


===2020 [https://pubmed.ncbi.nlm.nih.gov/33250386/ Abuse liability assessment of the JUUL system in two nicotine concentrations compared to combustible cigarette, nicotine gum and comparator electronic nicotine delivery system]===
===2020 [https://pubmed.ncbi.nlm.nih.gov/33250386/ Abuse liability assessment of the JUUL system in two nicotine concentrations compared to combustible cigarette, nicotine gum and comparator electronic nicotine delivery system]===
*Conclusions: These results suggest that the abuse liability of both 5.0 % and 3.0 % JS is: (1) substantially lower than UB cigarette; (2) somewhat lower than comparator ENDS; and (3) higher than nicotine gum. Additionally, the abuse liability of JS 5.0 % is somewhat higher than JS 3.0 %.
*Conclusions: These results suggest that the abuse liability of both 5.0 % and 3.0 % JS is: (1) substantially lower than UB cigarette; (2) somewhat lower than comparator ENDS; and (3) higher than nicotine gum. Additionally, the abuse liability of JS 5.0 % is somewhat higher than JS 3.0 %.
*Acknowledgment: The study was funded by Juul Labs, Inc. NIG, EMA, DVH and MLR are full-time employees of Juul Labs, Inc., JEH and ARB are full-time employees of PinneyAssociates, Inc. PinneyAssociates provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. Within the last two years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. JEH co-holds a patent for a novel nicotine medication that has not been developed or commercialized. There are no other interests declared by authors.
**Citation: Goldenson NI, Buchhalter AR, Augustson EM, Rubinstein ML, Van Hoof D, Henningfield JE. Abuse liability assessment of the JUUL system in two nicotine concentrations compared to combustible cigarette, nicotine gum and comparator electronic nicotine delivery system. Drug Alcohol Depend. 2020 Dec 1;217:108441. doi: 10.1016/j.drugalcdep.2020.108441. Epub 2020 Nov 24. PMID: 33250386.
***Acknowledgment: The study was funded by Juul Labs, Inc. NIG, EMA, DVH and MLR are full-time employees of Juul Labs, Inc., JEH and ARB are full-time employees of PinneyAssociates, Inc. PinneyAssociates provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. Within the last two years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. JEH co-holds a patent for a novel nicotine medication that has not been developed or commercialized. There are no other interests declared by authors.


===2020 [https://www.tandfonline.com/doi/abs/10.1080/10826084.2020.1834582?journalCode=isum20& Dependence and Use Characteristics of Adult JUUL Electronic Cigarette Users]===  
===2020 [https://www.tandfonline.com/doi/abs/10.1080/10826084.2020.1834582?journalCode=isum20& Dependence and Use Characteristics of Adult JUUL Electronic Cigarette Users]===  
*Conclusion: "On average, JUUL users reported low to medium nicotine dependence on the PSECDI. JUUL user dependence may be more similar to e-cig user dependence than cigarette smoker dependence. These preliminary findings should be followed up in studies of larger samples of Juul users, collecting multiple measures of dependence, as well as biomarkers of nicotine intake (e.g. cotinine)."
*Conclusion: "On average, JUUL users reported low to medium nicotine dependence on the PSECDI. JUUL user dependence may be more similar to e-cig user dependence than cigarette smoker dependence. These preliminary findings should be followed up in studies of larger samples of Juul users, collecting multiple measures of dependence, as well as biomarkers of nicotine intake (e.g. cotinine)."
*Citation: Yingst J, Foulds J, Hobkirk AL. Dependence and Use Characteristics of Adult JUUL Electronic Cigarette Users. Subst Use Misuse. 2021;56(1):61-66. doi: 10.1080/10826084.2020.1834582. Epub 2020 Oct 29. PMID: 33118854; PMCID: PMC7905831.
**Citation: Yingst J, Foulds J, Hobkirk AL. Dependence and Use Characteristics of Adult JUUL Electronic Cigarette Users. Subst Use Misuse. 2021;56(1):61-66. doi: 10.1080/10826084.2020.1834582. Epub 2020 Oct 29. PMID: 33118854; PMCID: PMC7905831.
*Acknowledgment: This study was funded by internal funds provided by the Penn State College of Medicine Department of Psychiatry. ALH is supported by a career development award from the National Institute on Drug Abuse (K23 DA045081). JY and JF are supported by NIH grants (R01 DA048428, U01 DA045517). The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication. JF has done paid consulting for pharmaceutical companies involved in producing smoking cessation medications, including GSK, Pfizer, Novartis, J&J, and Cypress Bioscience. The other authors have no disclosures to report related to this publication.
***Acknowledgment: This study was funded by internal funds provided by the Penn State College of Medicine Department of Psychiatry. ALH is supported by a career development award from the National Institute on Drug Abuse (K23 DA045081). JY and JF are supported by NIH grants (R01 DA048428, U01 DA045517). The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication. JF has done paid consulting for pharmaceutical companies involved in producing smoking cessation medications, including GSK, Pfizer, Novartis, J&J, and Cypress Bioscience. The other authors have no disclosures to report related to this publication.


===2020 [https://pubmed.ncbi.nlm.nih.gov/33086157/ A comparison of product dependence among cigarette only, ENDS only, and dual users: Findings from Wave 3 (2015-2016) of the PATH study]===  
===2020 [https://pubmed.ncbi.nlm.nih.gov/33086157/ A comparison of product dependence among cigarette only, ENDS only, and dual users: Findings from Wave 3 (2015-2016) of the PATH study]===  
*"Conclusion: While there was no difference in CD between dual and cigarette only users, dual users' ED was lower than that for ENDS only users. ENDS appeared to produce less dependence than cigarettes among dual users. Given the high nicotine concentration ENDS products that entered the market after PATH Wave 3 data were collected, future research should examine ED among ENDS only and dual users."
*"Conclusion: While there was no difference in CD between dual and cigarette only users, dual users' ED was lower than that for ENDS only users. ENDS appeared to produce less dependence than cigarettes among dual users. Given the high nicotine concentration ENDS products that entered the market after PATH Wave 3 data were collected, future research should examine ED among ENDS only and dual users."
*Citation: Kaplan B, Alrumaih F, Breland A, Eissenberg T, Cohen JE. A comparison of product dependence among cigarette only, ENDS only, and dual users: Findings from Wave 3 (2015-2016) of the PATH study. Drug Alcohol Depend. 2020 Dec 1;217:108347. doi: 10.1016/j.drugalcdep.2020.108347. Epub 2020 Oct 12. PMID: 33086157; PMCID: PMC7736550.
**Citation: Kaplan B, Alrumaih F, Breland A, Eissenberg T, Cohen JE. A comparison of product dependence among cigarette only, ENDS only, and dual users: Findings from Wave 3 (2015-2016) of the PATH study. Drug Alcohol Depend. 2020 Dec 1;217:108347. doi: 10.1016/j.drugalcdep.2020.108347. Epub 2020 Oct 12. PMID: 33086157; PMCID: PMC7736550.
*Acknowledgment: This research was supported by the National Institute on Drug Abuse of the National Institutes of Health under Award Number U54DA036105 and the Center for Tobacco Products of the U.S. Food and Drug Administration. The content is solely the responsibility of the authors and does not necessarily represent the views of the NIH or the FDA. Dr. Eissenberg is a paid consultant in litigation against the tobacco industry and also the electronic cigarette industry and is named on one patent for a device that measures the puffing behavior of electronic cigarette users and on another patent for a smartphone app that determines electronic cigarette device and liquid characteristics. The other co-authors declare no conflict of interests.
***Acknowledgment: This research was supported by the National Institute on Drug Abuse of the National Institutes of Health under Award Number U54DA036105 and the Center for Tobacco Products of the U.S. Food and Drug Administration. The content is solely the responsibility of the authors and does not necessarily represent the views of the NIH or the FDA. Dr. Eissenberg is a paid consultant in litigation against the tobacco industry and also the electronic cigarette industry and is named on one patent for a device that measures the puffing behavior of electronic cigarette users and on another patent for a smartphone app that determines electronic cigarette device and liquid characteristics. The other co-authors declare no conflict of interests.


===2020 [https://onlinelibrary.wiley.com/doi/full/10.1111/add.15060 Dependence on e-cigarettes and cigarettes in a cross-sectional study of US adults]===  
===2020 [https://onlinelibrary.wiley.com/doi/full/10.1111/add.15060 Dependence on e-cigarettes and cigarettes in a cross-sectional study of US adults]===  
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===2020 [https://pubmed.ncbi.nlm.nih.gov/33176942/ Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers]===  
===2020 [https://pubmed.ncbi.nlm.nih.gov/33176942/ Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers]===  
*Conclusions: Controlled use of JS among adult smokers resulted in nicotine delivery, product liking, and satisfaction that were less than that of combustible cigarettes but generally greater than nicotine gum. These results support the conclusion that JS has lower abuse liability than combustible cigarettes, higher abuse liability than nicotine gum, and may provide sufficient nicotine delivery and satisfying effects to support substitution for combustible cigarettes among adult smokers.
*Conclusions: Controlled use of JS among adult smokers resulted in nicotine delivery, product liking, and satisfaction that were less than that of combustible cigarettes but generally greater than nicotine gum. These results support the conclusion that JS has lower abuse liability than combustible cigarettes, higher abuse liability than nicotine gum, and may provide sufficient nicotine delivery and satisfying effects to support substitution for combustible cigarettes among adult smokers.
*Citation: Goldenson NI, Buchhalter AR, Augustson EM, Rubinstein ML, Henningfield JE. Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers. Drug Alcohol Depend. 2020 Dec 1;217:108395. doi: 10.1016/j.drugalcdep.2020.108395. Epub 2020 Nov 4. PMID: 33176942.
**Citation: Goldenson NI, Buchhalter AR, Augustson EM, Rubinstein ML, Henningfield JE. Abuse liability assessment of the JUUL system in four flavors relative to combustible cigarette, nicotine gum and a comparator electronic nicotine delivery system among adult smokers. Drug Alcohol Depend. 2020 Dec 1;217:108395. doi: 10.1016/j.drugalcdep.2020.108395. Epub 2020 Nov 4. PMID: 33176942.
*Acknowledgment: The study was funded by Juul Labs, Inc. NIG, EMA and MLR are full-time employees of Juul Labs, Inc., JEH and ARB are full-time employees of PinneyAssociates, Inc. PinneyAssociates provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. Within the last two years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. JEH co-holds a patent for a novel nicotine medication that has not been developed or commercialized. There are no other interests declared by authors.
***Acknowledgment: The study was funded by Juul Labs, Inc. NIG, EMA and MLR are full-time employees of Juul Labs, Inc., JEH and ARB are full-time employees of PinneyAssociates, Inc. PinneyAssociates provides consulting services on tobacco harm reduction on an exclusive basis to Juul Labs, Inc. Within the last two years, PinneyAssociates has consulted for British American Tobacco and Reynolds American Inc and subsidiaries on tobacco harm reduction. JEH co-holds a patent for a novel nicotine medication that has not been developed or commercialized. There are no other interests declared by authors.


===2019 [https://pubmed.ncbi.nlm.nih.gov/31477072/ Vaping patterns, nicotine dependence and reasons for vaping among American Indian dual users of cigarettes and electronic cigarettes]===
===2019 [https://pubmed.ncbi.nlm.nih.gov/31477072/ Vaping patterns, nicotine dependence and reasons for vaping among American Indian dual users of cigarettes and electronic cigarettes]===
*Conclusion: "Nearly 20% of dual users used ECs either without nicotine or without knowing if the product contained nicotine. The PSDI [Penn State Dependence Index] indicated greater dependence on smoking than vaping. Reasons for vaping were nearly equal between smoking reduction and enjoying flavors. Understanding patterns of dual use will inform future efforts to address nicotine dependence for AI communities with high prevalence of smoking."
*Conclusion: "Nearly 20% of dual users used ECs either without nicotine or without knowing if the product contained nicotine. The PSDI [Penn State Dependence Index] indicated greater dependence on smoking than vaping. Reasons for vaping were nearly equal between smoking reduction and enjoying flavors. Understanding patterns of dual use will inform future efforts to address nicotine dependence for AI communities with high prevalence of smoking."
*Citation: Rhoades DA, Comiford AL, Dvorak JD, Ding K, Hopkins M, Spicer P, Wagener TL, Doescher MP. Vaping patterns, nicotine dependence and reasons for vaping among American Indian dual users of cigarettes and electronic cigarettes. BMC Public Health. 2019 Sep 2;19(1):1211. doi: 10.1186/s12889-019-7523-5. PMID: 31477072; PMCID: PMC6721166.
**Citation: Rhoades DA, Comiford AL, Dvorak JD, Ding K, Hopkins M, Spicer P, Wagener TL, Doescher MP. Vaping patterns, nicotine dependence and reasons for vaping among American Indian dual users of cigarettes and electronic cigarettes. BMC Public Health. 2019 Sep 2;19(1):1211. doi: 10.1186/s12889-019-7523-5. PMID: 31477072; PMCID: PMC6721166.
*Acknowledgment: Grants from the National Cancer Institute of the National Institutes of Health (P20CA202921 to University of Oklahoma, and 5P20CA202923 to Cherokee Nation) supported this study. The funding body had no role in the design of the study and collection, analysis, interpretation of data, or writing the manuscript. Content is solely the responsibility of the authors and does not represent the official views of the National Institutes of Health or of Cherokee Nation. The authors declare that they have no competing interests.
***Acknowledgment: Grants from the National Cancer Institute of the National Institutes of Health (P20CA202921 to University of Oklahoma, and 5P20CA202923 to Cherokee Nation) supported this study. The funding body had no role in the design of the study and collection, analysis, interpretation of data, or writing the manuscript. Content is solely the responsibility of the authors and does not represent the official views of the National Institutes of Health or of Cherokee Nation. The authors declare that they have no competing interests.


===2019 [https://pubmed.ncbi.nlm.nih.gov/31375364/ Changes in E-Cigarette Use Behaviors and Dependence in Long-term E-Cigarette Users]===  
===2019 [https://pubmed.ncbi.nlm.nih.gov/31375364/ Changes in E-Cigarette Use Behaviors and Dependence in Long-term E-Cigarette Users]===  
*"Results: A total of 494 subjects provided complete data on both surveys. At baseline, 402 subjects (81.4%) were exclusive e-cigarette users, and 71 subjects (14.4%) were poly users. Among baseline exclusive e-cigarette users, the majority (88.3%) continued using e-cigarettes exclusively, but 37 users (9.2%) became poly users and 1 returned to cigarette smoking at follow-up. Among baseline poly users, 60.6% became exclusive e-cigarette users at follow-up. The mean PSECDI score remained similar over time (8.4 at baseline vs 8.3 at follow-up)."
*"Results: A total of 494 subjects provided complete data on both surveys. At baseline, 402 subjects (81.4%) were exclusive e-cigarette users, and 71 subjects (14.4%) were poly users. Among baseline exclusive e-cigarette users, the majority (88.3%) continued using e-cigarettes exclusively, but 37 users (9.2%) became poly users and 1 returned to cigarette smoking at follow-up. Among baseline poly users, 60.6% became exclusive e-cigarette users at follow-up. The mean PSECDI score remained similar over time (8.4 at baseline vs 8.3 at follow-up)."
**NOTE: For information on the Penn State Ecigarette Dependence Index see this [https://research.med.psu.edu/smoking/dependence-index/ link]. Scores: 4 to 8 is low dependence and 9 to 12 is a medium dependence.
*NOTE: For information on the Penn State Ecigarette Dependence Index see this [https://research.med.psu.edu/smoking/dependence-index/ link]. Scores: 4 to 8 is low dependence and 9 to 12 is a medium dependence.
*Citation: Du P, Fan T, Yingst J, Veldheer S, Hrabovsky S, Chen C, Foulds J. Changes in E-Cigarette Use Behaviors and Dependence in Long-term E-Cigarette Users. Am J Prev Med. 2019 Sep;57(3):374-383. doi: 10.1016/j.amepre.2019.04.021. Epub 2019 Jul 31. PMID: 31375364; PMCID: PMC9811611.
**Citation: Du P, Fan T, Yingst J, Veldheer S, Hrabovsky S, Chen C, Foulds J. Changes in E-Cigarette Use Behaviors and Dependence in Long-term E-Cigarette Users. Am J Prev Med. 2019 Sep;57(3):374-383. doi: 10.1016/j.amepre.2019.04.021. Epub 2019 Jul 31. PMID: 31375364; PMCID: PMC9811611.
***Acknowledgment: This work was supported by the National Institute on Drug Abuse of NIH and the Center for Tobacco Products of the U.S. Food and Drug Administration (P50-DA-036107). The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH or the U.S. Food and Drug Administration. Jonathan Foulds has acted as a paid consultant for pharmaceutical companies involved in producing smoking-cessation medications, including GSK, Pfizer, Novartis, and J&J and received a research grant and study products from Pfizer Inc. No other financial disclosures were reported.


===2018 [https://pubmed.ncbi.nlm.nih.gov/29725702/ Assessment of the abuse liability of three menthol Vuse Solo electronic cigarettes relative to combustible cigarettes and nicotine gum]===  
===2018 [https://pubmed.ncbi.nlm.nih.gov/29725702/ Assessment of the abuse liability of three menthol Vuse Solo electronic cigarettes relative to combustible cigarettes and nicotine gum]===  
*These findings are concordant with our previous results and provide evidence that menthol Vuse Solo ECs have abuse liability that is lower than menthol cigarettes and potentially greater than that of nicotine gum.
*These findings are concordant with our previous results and provide evidence that menthol Vuse Solo ECs have abuse liability that is lower than menthol cigarettes and potentially greater than that of nicotine gum.
*[https://sci-hub.se/10.1007/s00213-018-4904-x PDF Version]
*[https://sci-hub.se/10.1007/s00213-018-4904-x PDF Version]
*Citation: Stiles MF, Campbell LR, Jin T, Graff DW, Fant RV, Henningfield JE. Assessment of the abuse liability of three menthol Vuse Solo electronic cigarettes relative to combustible cigarettes and nicotine gum. Psychopharmacology (Berl). 2018 Jul;235(7):2077-2086. doi: 10.1007/s00213-018-4904-x. Epub 2018 May 3. PMID: 29725702; PMCID: PMC6015619.
**Citation: Stiles MF, Campbell LR, Jin T, Graff DW, Fant RV, Henningfield JE. Assessment of the abuse liability of three menthol Vuse Solo electronic cigarettes relative to combustible cigarettes and nicotine gum. Psychopharmacology (Berl). 2018 Jul;235(7):2077-2086. doi: 10.1007/s00213-018-4904-x. Epub 2018 May 3. PMID: 29725702; PMCID: PMC6015619.
*Acknowledgement: ClinicalTrials.gov identifier: NCT02664012. MF Stiles, LR Campbell, and T Jin are full-time employees of RAI Services Company. RAI Services Company is a wholly owned subsidiary of Reynolds American Inc., which is a wholly owned subsidiary of British American Tobacco plc. DW Graff is a full-time employee of Celerion and provided the original draft of the manuscript. RV Fant and JE Henningfield are full-time employees of PinneyAssociates, which provides consulting services on smoking cessation and tobacco harm minimization (including nicotine replacement therapy and electronic vapor products) to Niconovum, USA, Inc., RJ Reynolds Vapor Company, and RAI Services Company (all subsidiaries of Reynolds American Inc.). JE Henningfield also owns an interest in intellectual property for a novel nicotine medication. Through PinneyAssociates, Fant and Henningfield provide consulting services to pharmaceutical companies on abuse potential assessment, and the regulation of substances with a potential for abuse.
***Acknowledgement: ClinicalTrials.gov identifier: NCT02664012. MF Stiles, LR Campbell, and T Jin are full-time employees of RAI Services Company. RAI Services Company is a wholly owned subsidiary of Reynolds American Inc., which is a wholly owned subsidiary of British American Tobacco plc. DW Graff is a full-time employee of Celerion and provided the original draft of the manuscript. RV Fant and JE Henningfield are full-time employees of PinneyAssociates, which provides consulting services on smoking cessation and tobacco harm minimization (including nicotine replacement therapy and electronic vapor products) to Niconovum, USA, Inc., RJ Reynolds Vapor Company, and RAI Services Company (all subsidiaries of Reynolds American Inc.). JE Henningfield also owns an interest in intellectual property for a novel nicotine medication. Through PinneyAssociates, Fant and Henningfield provide consulting services to pharmaceutical companies on abuse potential assessment, and the regulation of substances with a potential for abuse.


===2017 [https://pubmed.ncbi.nlm.nih.gov/28389330/ A comparison of nicotine dependence among exclusive E-cigarette and cigarette users in the PATH study]===  
===2017 [https://pubmed.ncbi.nlm.nih.gov/28389330/ A comparison of nicotine dependence among exclusive E-cigarette and cigarette users in the PATH study]===