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Table 1 Health-behavioural measures included in the analysis

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

Health behaviour

Response Options

Recoded [13]

Dietary behaviours

“How many times a week do you usually eat or drink …”

7 categories

“never”; “< once a week”; “once a week”; “2–4 days a week”; “5–6 days a week”; “once a day”; “every day, more than once

3 categories

<= once a week

2–6 days a week

daily

 Fruits

 Vegetables

 Sweets

 Coke or other soft drinks

Physical activity

“Over the past 7 days, on how many days were you physically active for a total of at least 60 min per day?”

8 categories

0–7

3 categories

0–2; 3–4; 5–7

Screen-based activities

“About how many hours a day do you usually …”

9 categories

“None at all”; “About 1/2 h”; “About 1 h”; “About 2 h”; “About 3 h”; “About 4 h”; “About 5 h”; “About 6”; “About 7 or more.”

3 categories

<= 2 h

3–4 h

> = 5 h

 Watch TV

 Play games

 Use a computer

Substance use

“Over the last 30 days, on how many occasions have you …”

7 categories

“never”, “once or twice”, “3–5 times”, “6–9 times”, “10–19 times”, “20–39 times”, “40 times”.

3 categories

Never

Once or twice

More than twice

 Smoked cigarettes

 Drunk alcohol

 Been drunk

 Taken marijuana