Associations Between Dual Tobacco Use and Smoking Cessation Intention Among Vietnamese Adults: A Cross Sectional Result From the Vietnam Population-Based Provincial Global Adult Tobacco Survey in 2022-2023.

Introduction: Dual use of tobacco products has gained increasing attention due to its potential implications for tobacco control efforts. This study utilized data from the 2022-2023 Vietnam Population-based Provincial Global Adult Tobacco Survey (PGATS) to examine the association between dual tobacco use (conventional cigarettes and e-cigarettes) and smoking cessation intention among Vietnamese adults aged 15 years and older. Methods: This cross-sectional study included 9821 adults who were currently smokers from 30 provinces and cities in Vietnam. Data were collected using a standardized questionnaire adapted from previous rounds of PGATS and administered via the REDCap platform. Univariable and multivariable logistic regression models, including refined models, were employed to examine the association between dual tobacco use and smoking cessation intention. Results: Among the 9821 smokers, 5.4% reported smoking cessation intention within the next month, 15.1% within the next 12 months, and the remaining participants had no quit plan. Dual users accounted for 1.8% of the sample. After adjusting for potential confounders, dual users were associated with higher odds of smoking cessation intention compared to single conventional cigarette use, with an adjusted odds ratio of 1.53 (95% CI: 1.09-2.16). Conclusion: Although dual tobacco use was uncommon among Vietnamese adult smokers, it was associated with a higher likelihood of smoking cessation. These findings suggest the need for future research into usage patterns, user motivations, and contextual factors that influence cessation behavior and sustaining this behavior.