Tab. I.

Description of variables used in the study.

Variable	Description/definition
Age	Participants age at the time of the survey (11-12 years, 13-15 years, and 16-17 years)
Grade	The participants’ grade in Junior High School (1st year of Junior High School (JHS1), 2nd year of Junior High School (JHS2), 3rd year of Junior High School (JHS3)
Current cigarette smokers	Participants who currently smoke cigarettes 1 or more days in the past 30 days
Ever cigarette smokers	Participants who ever smoked cigarettes or who tried or experimented with cigarette smoking, even one or two puffs
Current smokeless tobacco users	Participants who currently use smokeless tobacco products in the past 30 days
Exposure to secondhand smoke at home	Participants who were exposed to tobacco smoke at home in the past 7 days or who reported that smoking occurred in their presence inside their home on 1 or more days in the past 7 days
Taught about the dangers of tobacco use at school	Participants were taught about the dangers of tobacco use in class during the past 12 months
Exposure to anti-tobacco messages in the media	Participants who saw or heard any anti-tobacco messages in the media (e.g., television, radio, internet, billboards, posters, newspapers, magazines, or movies) in the past 30 days
Current electronic cigarette users	Participants who used electronic cigarettes during the past 30 days
Current waterpipe (shisha) users	Participants who used waterpipe (shisha) during the past 30 days
Pocket money	The amount of pocket money that participants spend on themselves on the average per week (No pocket money, Less than 2 cedis, 2-5 cedis, 6-10 cedis, 11-20 cedis, 21 cedis, or more)