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Objectives: Second-hand smoke (SHS) exposure causes >600,000 deaths annually worldwide, however, information regarding SHS exposure in Lao People's Democratic Republic (Lao PRD) is limited; we report SHS exposure prevalence at home, inside workplaces, and indoor public spaces in Lao PDR. Methods: Data were from the 2015 Lao National Adult Tobacco Survey, a nationally representative sample of 7,562 participants aged ≥15 years recruited through a stratified 2-stage cluster sampling approach. Results: 88.3% (83.9% of non-smokers) reported SHS exposure at home and 63.0% (54.0% of non-smokers) at workplaces. Among non-smokers, women had greater exposure at home than men (86.6 vs. 77.0%). Lower education levels were associated with exposure at home or the workplace. 99.2% reported SHS exposure at any public place; specifically for restaurants/food stores 57.7%, government offices 56.2%, public transport 31.6%, and health care facilities 11.7%. Conclusion: SHS exposure at home and workplace in Lao PDR is among the highest in South-East Asia. Comprehensive smoke-free policies at government-owned workplaces and facilities, stricter enforcement of these smoke-free policies, and strategies to encourage smoke-free environments at homes and in public places are urgently needed., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Kulkarni, Xangsayarath, Douangvichith, Siengsounthone, Phandouangsy, Tran, Le and Bui.)

Cigarette smoking represents a major public health problem in Lao People's Democratic Republic (Lao PDR). This study aims to examine factors associated with cigarette smoking cessation attempts and intention to quit. Data were from the Lao National Adult Tobacco Survey that consisted of 7562 participants ≥15 years old. Multivariable logistic regression models were used to evaluate the associations, adjusted for sex, age groups, education level, income per day, and smoking frequency. Results show that past quit attempts were associated with visiting a healthcare provider in the past year (adjusted odds ratio [AOR]: 1.74, 95% confidence intervals [CI]: 1.28-2.35), home smoking bans (AOR: 5.52, 95% CI: 2.13-14.33), noticing media-based messages informing the dangers of smoking or encouraging quitting (AOR: 3.25, 95% CI: 2.28-4.63), noticing health warnings on cigarette packages in the past 30 days (AOR: 3.33, 95% CI: 2.21-5.03), and believing that smoking is seriously harmful to their health (AOR: 3.45, 95% CI: 1.24-9.57). The Lao PDR government should continue implementing tobacco control policies that demonstrated associations with cessation attempts or intention to quit, such as smoke-free environments and required health warnings on cigarette packages. Tobacco cessation treatment programs are pressingly needed in Lao PDR.