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Table 2 Individual and contextual factors

From: Clustering of health-related behaviours and its relationship with individual and contextual factors in Portuguese adolescents: results from a cross-sectional study

Individual factors

Response Options

Recoded

 Age

Continuous

 

 Height (self-report)

Body Mass Index

2 categories

Normal weight

Overweight and obesity

 Weight (self-report)

Contextual factors

Family factors

Family Affluence Scale

 

Sum = 0–9

 No. of cars

“No” (0); “One” (1); “Two or more” (2)

dichotomised

High (3rd quantile) / Medium-low (1st and 2nd quantiles)

Ref: [10, 14]

 Own bedroom

“No”(0), “Yes” (1)

 Holiday with family

“Not at all” (0), “Once” (1), “Twice” (2), “More than twice” (3)

 No. of computers at home

“None” (0), “One” (1), “Two” (2), “More than two”(3)

Family structure

“Check all the people who live in the home where you live all or most of the time.”

“mother”, “father”, “stepmother”, “stepfather”, “grandmother”, “grandfather”, “I live in a foster home”, “other.”

dichotomised

Living with both parents / Other family typology

Ref: [10]

Family communication

“How easy it is to talk to the following persons about things that really bother you”.

“very easy”, “easy”, “difficult”, “very difficult”, “don’t have or see.”

dichotomised

Good communication with both parents (or only parent) / Other

Ref: [10]

 Mother

 father

School factors

School attachment

“How do you feel about school at present.”

I like it a lot”, “I like it a bit”, “I don’t like it very much”, “I don’t like it at all”,

dichotomised

Like / Dislike Ref: [10]

Academic achievement

“What does your class teacher(s) think about your school performance compared to your classmates”.

“very good”, “good”, “average”, “below average”,

dichotomised

Good / Average or below

Peers factors

No. of evenings a week spent out with friends

0–7

 

Violent behaviour and victimisation

How often / many times have you

 

dichotomised

Yes / No

 Taken part in bullying others in the last 2 months

“I haven’t”, “Once or twice”, “2 or 3 times a month”, “once a week”, “several times a week.”

 Being bullied at school in the last 2 months

 Participated in a physical fight in the past 12 months

“I haven’t”, “One time”, “Two times”, “Three times”, “Four times or more.”