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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
 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
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
Once or twice
More than twice
 Smoked cigarettes
 Drunk alcohol
 Been drunk
 Taken marijuana