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)
Canadian Virginia provides a milder experience with a subtle sweetness, while American Virginia offers a slightly tangy flavor, adding more character and depth to cigarette blends
Red dye No.2, a known carcinogen, has been banned in the United States since 1976
Raw 79mm Made of environmentally-friendly hemp plastic, this Raw 79mm is sure to satisfy your tie-dye-wearing, boge-smoking inner hippie
