Trends in vaping and smoking behavior before and during the COVID-19 pandemic in Canada: Beneficial and potentially detrimental changes.

INTRODUCTION: E-cigarette and cigarette use may have changed during the COVID-19 pandemic, however, there is no consensus in existing literature, and current Canadian studies have not used representative samples. Thus, there is a need for robust national estimates. OBJECTIVE AND METHODS: The primary objective was to describe the 30-day period prevalence of smoking and vaping before and during the COVID-19 pandemic in Canada. This study analyzed three years of the cross-sectional Canadian Tobacco and Nicotine Survey: 2019 (pre-pandemic), 2020 (9 months into the pandemic) and 2021 (21 months into pandemic). RESULTS: Thirty-day period prevalence of vaping over the 2019, 2020, and 2021 study periods were 4.8 (95%CI: 4.2-5.3), 4.6% (95%CI: 4.1-5.2), and 5.2% (95%CI: 4.7-5.7), respectively. The 30-day period prevalence of smoking over the 2019, 2020, and 2021 study periods were 11.9% (95%CI: 10.9-12.7), 10.3% (95%CI: 9.4-11.2), and 10.3% (95%CI: 9.4-11.1), respectively. Notably, estimates of smoking for females decreased considerably from 2019 (11.0%; 95%CI: 9.9--12.2%) to 2020 (8.6%; 95%CI: 7.5-9.7). Estimates of vaping in those aged 20-24 increased substantially from 2020 (13.0%; 95%CI: 10.9-15.1) to 2021 (17.2%; 95%CI: 15.4-18.9). CONCLUSIONS: Changes to smoking and vaping were restricted to subsets within the population. In those aged 20-24, there was a modest increase in vaping from 2020 to 2021. In females, there was a decrease in smoking from 2019 to 2020, which persisted in 2021.

Assessing risk behaviours in the Iranian general population: results from the Iranian Mental Health Survey.

BACKGROUND: The Islamic Republic of Iran is a majority Muslim country, with a culturally low acceptance of high-risk behaviours. AIMS: To investigate co-occurrence of risk behaviours in the Iranian general population. METHODS: This was a cross-sectional study. Data were obtained from a random subsample of 3508 participants in the Iranian Mental Health Survey conducted in 2011 who completed a self-administered questionnaire about risk behaviours. The latent class analysis was performed on 7 behaviours consisting of cigarette smoking, alcohol consumption, opium use, use of other illicit drugs, having multiple sexual partners, imprisonment, and running away from home. Unordered multinomial logistic regression was performed to examine characteristics of participants in the latent classes. RESULTS: In the past 12 months, the rates of cigarette smoking, alcohol consumption, opium use, and use of other illicit drugs were 19.4%, 6.3%, 4.4%, and 4.2%, respectively. Three classes were identified: 1, a large class with low prevalence of risk behaviours [89.2%; 95% confidence interval (CI): 88.2-90.2%]; 2, high prevalence of all risk behaviours except drug use (6.1%; 95% CI: 5.3-6.9%); and 3, high prevalence of all risk behaviours (4.7%; 95% CI: 4.1-5.5%). Men and individuals with psychiatric disorders were over-represented in both classes 2 and 3. CONCLUSION: Alcohol consumers and opium users were at risk of other risky behaviours.