Table 1 Independent variables derivation from survey data

Age

How old are you?

11–18 years (coded categorically)

N/A

Sex

What is your sex

1 = male; 0 = female

N/A

Anxiety

During the past 12 months, how often have you been so worried about something that you could not sleep at night?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Loneliness

During the past 12 months, how often have you felt lonely?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Suicidal Ideation

During the past 12 months, did you ever seriously consider attempting suicide?

Yes = 1; no = 2

Yes = 1 and no = 0

Suicidal plan

During the past 12 months, did you make a plan about how you would attempt suicide?

Yes = 1; no = 2

Yes = 1 and no = 0

Suicidal attempt

During the past 12 months, how many times, did you actually attempted suicide

1 = 0 times to 5 = 6 times or more

1 = 0 and 2–5 = 1

School truancy

During the past 30 days, how many days did you miss classes or school without permission?

1 = 0 days to 5 = 10 or more days

1 = 0 and 2–5 = 1

Bullied

During the past 30 days, how many days were you bullied?

1 = 0 days to 7 = all 30 days

1–3 = 0 and 4–7 = 1

Physically attacked

During the past 12 months, how many times were you physically attack?

1 = 0 times to 8 = 12 or more times

1 = 0 and 2–8 = 1

In a physical fight

During the past 12 months, how many times were you in a physical fight?

1 = 0 times to 8 = 12 or more times

1 = 0 and 2–8 = 1

Hunger

During the past 30 days, how often did you go hungry because there was not enough food in your home?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Sexual risk behaviour

During your life, with how many people have you ever had sexual intercourse

1 = never had intercourse to 7 = 6 or more people

1 = 0 and 2–7 = 1

Close friends

How many close friends do you have?

1 = 0 friends to 4 = 3 or more close friend

1 = 0 and 2–4 = 1

Peer support

During the past 30 days, how often were most of the students in your class kind and helpful?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Current smoking of cigarette

During the past 30 days, how many days did you smoke cigarette?

1 = 0 days to 7 = all 30 days

1 = 0 and 2–7 = 1

Parental tobacco use

Which of your parents or guardian use any form of tobacco?

1 = never to 4 = both

1 = 0 and 2–4 = 1

Parental monitoring

During the past 30 days, how often did your parents or guardians check to see if your homework was done?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Parental understanding

During the past 30 days, how often did your parents or guardians understand your problems and worries?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Parental bonding

During the past 30 days, how often did your parents or guardians really know what you were doing you’re your free time?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Parental intrusion of privacy

During the past 30 days, how often did your parents or guardians go through your things without your approval?

1 = never to 5 = always

1–3 = 0 and 4–5 = 1

Cannabis use

During the past 30 days, how many times have you used marijuana (also called weed, Jah, Indian hemp, ahabammmono, and ganja)?”

1 = 0 days to 5 = All 30 days

1 = 0 and 2–5 = 1

Amphetamine

During your life, how many times have you used amphetamine or methamphetamine (also called ice or yellow)

1 = 0 times to 5 = 20 or more times

1 = 0 and 2–5 = 1