The following factors were included as covariates for potential confounders or risk factors: sex (male or female), grade (7th, 8th, 9th, 10th, 11th, or 12th), academic performance (high, middle, or low), area of residence (metropolitan, urban, or rural), residence type (living with or without family), economic status (high, middle, or low), subjective health condition (healthy, normal, or unhealthy), physical activity over 1 h and five times per week (yes or no), drinking experience (yes or no), smoking status (never, ex-smoker, or current smoker), sleep satisfaction (satisfied, regular, or unsatisfied), stress perception (high, middle, or low), depressive symptoms in the past 12 months (yes or no), and year (2020, 2021, 2022, or 2023)
says:Corinne got great coupons in the mail and was excited to try them
It refers to the number of packs of cigarettes smoked per day multiplied by the number of years the person has smoked
Known health effects of nicotine: Nicotine is addictive Nicotine is harmful to developing fetuses Nicotine can harm adolescent brain development, which continues into the early to mid-20s Use exposes the lungs to a variety of chemicals: Including those added to e-liquids, and other chemicals produced during the heating/vaporizing process The aerosol created by e-cigarettes can contain ingredients that are harmful and potentially harmful to the publics health, including: nicotine