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BMJ Open. 2016 Nov 10;6(11):e011571. doi: 10.1136/bmjopen-2016-011571.

Patterns of health-related behaviours among adolescents: a cross-sectional study based on the National Survey of School Health Brazil 2012.

Author information

1
School of Medicine-Federal University of Uberlandia (Faculdade de Medicina-Universidade Federal de Uberlândia), Uberlandia, Brazil.
2
School of Medicine-University of Sao Paulo (Faculdade de Medicina-Universidade de São Paulo), Sao Paulo, Brazil.
3
Department of Population Health, London School of Hygiene and Tropical Medicine, Centre for Global Mental Health, London, UK.

Abstract

OBJECTIVES:

The aim of this study was to analyse the clustering of multiple health-related behaviours among adolescents and describe which socio-demographic characteristics are associated with these patterns.

DESIGN:

Cross-sectional study.

SETTING:

Brazilian schools assessed by the National Survey of School Health (PeNSE, 2012).

PARTICIPANTS:

104 109 Brazilian ninth-grade students from public and private schools (response rate=82.7%).

METHODS:

Exploratory and confirmatory factor analyses were performed to identify behaviour clustering and linear regression models were used to identify socio-demographic characteristics associated with each one of these behaviour patterns.

RESULTS:

We identified a good fit model with three behaviour patterns. The first was labelled 'problem-behaviour' and included aggressive behaviour, alcohol consumption, smoking, drug use and unsafe sex; the second was labelled 'health-compromising diet and sedentary behaviours' and included unhealthy food indicators and sedentary behaviour; and the third was labelled 'health-promoting diet and physical activity' and included healthy food indicators and physical activity. No differences in behaviour patterns were found between genders. The problem-behaviour pattern was associated with male gender, older age, more developed region (socially and economically) and public schools (compared with private). The 'health-compromising diet and sedentary behaviours' pattern was associated with female gender, older age, mothers with higher education level and more developed region. The 'health-promoting diet and physical activity' pattern was associated with male gender and mothers with higher education level.

CONCLUSIONS:

Three health-related behaviour patterns were found among Brazilian adolescents. Interventions to decrease those negative patterns should take into account how these behaviours cluster together and the individuals most at risk.

KEYWORDS:

adolescents; factor analysis; health-risk behaviours; multiple risk behaviours

PMID:
28186927
PMCID:
PMC5128904
DOI:
10.1136/bmjopen-2016-011571
[Indexed for MEDLINE]
Free PMC Article

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