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)
When I ran my TSI particle counter in my uncles living room, I watched PM2.5 readings drop from 75 g/m to 0-1 g/m within an hourcleaner than most outdoor air
It raised cigarette taxes early
Extended duration therapy with transdermal nicotine may attenuate weight gain following smoking cessation
Most sexually transmitted infections require specific routes of transmission that don't typically occur through shared smoking implements
