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Objectives: The aim of this study was to examine whether an aggregate of health risk behaviours is associated with the number of untreated dental caries among 12‐ and 15‐year‐old children in England, Wales and Northern Ireland. Materials and Methods: Data were from the Children's Dental Health Survey (CDHS) 2013, a nationally representative sample of England, Wales and Northern Ireland. The survey included assessment of oral health and data on socioeconomic, demographic and behavioural factors pertaining to children aged 12–15 years. Tooth condition (decayed, missing and filled) was assessed by NHS dentists. The survey included questions on age, sex, country, index of multiple deprivation, smoking, alcohol consumption, frequent sugar consumption and sweetened sodas, infrequent dental visit, infrequent toothbrushing and infrequent consumption of fresh fruits. Health risk behaviours were summed up to create an aggregate variable of health risk behaviour. The association between number of untreated caries and the aggregate of health risk behaviours was assessed using negative binomial regression and adjusting for age, sex, country and deprivation. Results: The total number of children included in the analysis was 4414. The mean number of untreated caries was generally higher among children with health risk behaviours. The aggregate of risk behaviour was associated with greater prevalence of untreated dental caries with rate ratio (RR) 1.26 (95% confidence interval: 1.18, 1.36). Conclusion: This study demonstrated an association between an aggregate of health risk behaviours and untreated caries. The findings highlight the importance of addressing multiple risk factors not only those directly related to dental caries. [ABSTRACT FROM AUTHOR]

Health-Risk Behaviours (HRBs) are significantly associated with avoidable mortality in adolescents, and preventing HRBs requires an adequate understanding of related factors. Among associated factors, emotion regulation difficulties may impact youths' engagement in HRBs. Researchers explored the relation of emotion regulation with HRBs; however, specific emotion regulation difficulties for less severe and more prevalent HRBs, such as self-harming behaviour, risky-driving, violence, unhealthy dietary behaviour, and poor adherence to prescribed medication, has not been much explored. The current study aimed to explore the predictability of adolescents' specific difficulties in emotion regulation in relation to their engagement in HRBs. For this purpose, six different HRBs, that is, self-harm, violence, risky-driving, unhealthy dietary behaviour, inadequate physical activity, and lack of medication adherence, were studied. A total of 617 (Males = 356) adolescents (M age = 15.77) from five districts of Punjab state (India) provided required information on standardised self-report measures. The data were subjected to regression analysis, and the findings show that the participants who scored high on emotion regulation difficulties reported engagement in HRBs more than their counterparts. Some specific difficulties are more important than others for different forms of HRBs. It implies that the intervention programmes targeting specific HRBs should address specific facets of emotional dysregulation. [ABSTRACT FROM AUTHOR]

Health-Risk Behaviours (HRBs) are significant antecedent conditions of adverse health outcomes among adolescents, and their prevention requires an in-depth understanding of associated factors. Like any other behaviour, HRBs may be an outcome of a complex interplay between personal and situational factors that determines our responses. Among other factors, emotional tendencies, specific behavioural patterns, and psychosocial environment may be the significant factors working at different hierarchical positions within a system and guiding human behaviours, including HRBs. Previous studies have explored the role of these specific factors in developing and maintaining HRBs, but mainly among the adult population, and no conclusive results could be observed regarding their contribution to HRBs in adolescents. The present study explored the predictability of adolescents' engagement in HRBs with regard to three representations of the mentioned factors, i.e., emotion regulation difficulties, perceived parenting practices and personality traits. A total of 723 (Males = 440) adolescents (Mage = 16.05, SD = 1.1) provided relevant information on the standardized questionnaires. Structural equation modelling was applied to test the stated hypotheses. Analysis revealed that the adolescents who reported more difficulty regulating one's emotions, perceived parenting practice as maladaptive, scored high on neuroticism and low on conscientiousness, showed more engagement in HRBs than their counterparts. Further, the findings indicated that emotion regulation difficulties and perceived parenting practices are stronger predictors of HRBs than personality traits. Interventional programs targeting HRBs among adolescents should address specific facets of emotional dysregulation and sensitise parents about their role in moderating adolescents' HRBs. [ABSTRACT FROM AUTHOR]

Individuals who experience stress can engage in health-risk behaviours that may decrease work performance. The aim of this study was to determine perceived stress levels in Brazilian workers and verify whether perceived stress was associated with health-risk behaviours. Stress levels of 1,270 workers (1,019 men, 251 women) were assessed using the Perceived Stress Scale. The health-risk behaviours investigated were low intake of vegetables and fruits, daily smoking, high-risk alcohol consumption, physical inactivity, and the presence of obesity. The Student's t-test or one-way analysis of variance was used to assess differences in stress levels. Ordinal regression was used to determine the association between the degrees of stress and health-risk behaviours. Women had higher perceived stress levels than men. In addition, perceived stress levels were higher in those who had low socioeconomic status, were unmarried, had a negative perception of their health, were smokers, or had obesity. Smoking and the presence of two or more health-risk behaviours were associated with 1.84 (95% CI: 1.24–2.73) times and 1.49 (95% CI: 1.18–1.89) times higher odds of experiencing higher degrees of stress, respectively. In women, such an association was observed with the presence of obesity (odds ratio: 2.0; 95% CI: 1.01–3.98). [ABSTRACT FROM AUTHOR]

This study investigated gender differences in health-risk behaviour patterns among young adults and assessed the associations of anxiety and depression with these patterns. A cross-sectional survey was conducted with 1740 young Chinese adults aged 18–24 years. Latent class analysis (LCA) and multinomial logistic regression were conducted to identify the clusters of health-risk behaviours and their associations with anxiety and depression. Three common patterns were found for both genders: physical inactivity, substance use, and insufficient fruit intake (5.7% for males [M] and 11.6% for females [F]); a sedentary lifestyle only (48.4% for M and 48.9% for F); and a sedentary lifestyle, substance use, and an unhealthy diet (7.6% for M and 20.0% for F). Additionally, two additional unique patterns were found: physical inactivity and unhealthy diet in males (38.3%) and physical inactivity and insufficient fruit intake in females (19.6%). Sociodemographic variables exert different effects on health-risk behaviour patterns as a function of gender. Lower anxiety levels (odds ratio [OR]: 0.892; 95% confidence interval [CI]: 0.823–0.966) and greater depression levels (OR: 1.074; 95% CI: 1.008–1.143) were associated with a sedentary lifestyle, substance use, and unhealthy diet class only in female young adults compared with a sedentary-only class. These findings underscore the need for the implementation of targeted interventions based on gender differences. [ABSTRACT FROM AUTHOR]

Sexual violence exposure represents a serious public health issue among female youth given its association with female youths' engagement in health-risk behaviours. Sexual minority female youth are particularly vulnerable to sexual violence exposure, alcohol use, suicidality, and sexual-risk behaviour. Using the population-based 2017 Youth Risk Behaviour Survey, we examined sexual violence as a mediator of sexual orientation disparities in health-risk behaviours among female youth. This study included 7,532 female students in grades 9 through 12 across the US. Participants identified their sexual orientation as heterosexual (73.5%); bisexual (12.2%); and, gay or lesbian (2.2%). Compared to heterosexual female youth, sexual violence exposure, alcohol use, binge drinking, and multiple sex partners were more common among bisexual female youth. The elevated risk of suicidality was most notable among gay or lesbian female youth relative to heterosexual female youth and bisexual female youth relative to heterosexual female youth. Mediation analyses showed that sexual violence exposure partially explained the sexual orientation disparity in these co-occurring health-risk behaviours between bisexual female youth and heterosexual female youth. Our findings highlight the need for clinical attention to be paid to assessing and treating the health effects of sexual violence, especially among bisexual female youth. [ABSTRACT FROM AUTHOR]

This study investigated gender differences in health-risk behaviour patterns among young adults and assessed the associations of anxiety and depression with these patterns. A cross-sectional survey was conducted with 1740 young Chinese adults aged 18-24 years. Latent class analysis (LCA) and multinomial logistic regression were conducted to identify the clusters of health-risk behaviours and their associations with anxiety and depression. Three common patterns were found for both genders: physical inactivity, substance use, and insufficient fruit intake (5.7% for males [M] and 11.6% for females [F]); a sedentary lifestyle only (48.4% for M and 48.9% for F); and a sedentary lifestyle, substance use, and an unhealthy diet (7.6% for M and 20.0% for F). Additionally, two additional unique patterns were found: physical inactivity and unhealthy diet in males (38.3%) and physical inactivity and insufficient fruit intake in females (19.6%). Sociodemographic variables exert different effects on health-risk behaviour patterns as a function of gender. Lower anxiety levels (odds ratio [OR]: 0.892; 95% confidence interval [CI]: 0.823-0.966) and greater depression levels (OR: 1.074; 95% CI: 1.008-1.143) were associated with a sedentary lifestyle, substance use, and unhealthy diet class only in female young adults compared with a sedentary-only class. These findings underscore the need for the implementation of targeted interventions based on gender differences., Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Background: Many studies demonstrated the relationship between adverse childhood experiences (ACEs) and diminished health functioning in adulthood. A growing literature has shown that positive childhood experiences (PCEs) co-occurring with ACEs reduce the risks for negative outcomes. Objective: The aim was to investigate how ACEs and PCEs are simultaneously associated with health outcomes in adulthood, including self-rated health, physical and mental health outcomes, and health-risk behaviours. Methods: A panel sample of 4,847 Slovenian adults was used and the data were weighted to closely resemble the Slovenian population. A series of logistic regression analyses were performed to examine how ACEs and PCEs predict the risk of various health outcomes. Results: Significant associations, as measured by adjusted odds ratios, were found between higher ACEs exposure and each of the 16 health outcomes evaluated. Adjusting for above median PCEs attenuated the association between ACEs and 6 health outcomes (poor self-rated physical and mental health, depression, anxiety, suicide attempt, physical inactivity; OR for ≥ 4 vs. 0 ACEs, 1.48–9.34). Mirroring these findings, above median PCEs were associated with lowered odds of these 6 health outcomes after adjusting for ACEs (OR for above vs. below median PCEs, 0.46–0.67), but not with odds of physical health outcomes and most of the health-risk behaviours. Stratified analyses by ACEs exposure level showed that the association between PCEs and self-rated health remained stable across ACEs exposure levels, while the association between PCEs and mental health outcomes and physical inactivity varied across ACEs exposure levels. Conclusions: Our results suggest that above median PCEs attenuate the association between ACEs and poor self-rated health, mental health problems, and physical inactivity in later life, and are negatively associated with these health problems even in the concurrent presence of ACEs. Interventions to promote PCEs can help to reduce unfavourable long-term health outcomes following childhood adversity.

Background: Many studies demonstrated the relationship between adverse childhood experiences (ACEs) and diminished health functioning in adulthood. A growing literature has shown that positive childhood experiences (PCEs) co-occurring with ACEs reduce the risks for negative outcomes. Objective: The aim was to investigate how ACEs and PCEs are simultaneously associated with health outcomes in adulthood, including self-rated health, physical and mental health outcomes, and health-risk behaviours. Methods: A panel sample of 4,847 Slovenian adults was used and the data were weighted to closely resemble the Slovenian population. A series of logistic regression analyses were performed to examine how ACEs and PCEs predict the risk of various health outcomes. Results: Significant associations, as measured by adjusted odds ratios, were found between higher ACEs exposure and each of the 16 health outcomes evaluated. Adjusting for above median PCEs attenuated the association between ACEs and 6 health outcomes (poor self-rated physical and mental health, depression, anxiety, suicide attempt, physical inactivity; OR for ≥ 4 vs. 0 ACEs, 1.48–9.34). Mirroring these findings, above median PCEs were associated with lowered odds of these 6 health outcomes after adjusting for ACEs (OR for above vs. below median PCEs, 0.46–0.67), but not with odds of physical health outcomes and most of the health-risk behaviours. Stratified analyses by ACEs exposure level showed that the association between PCEs and self-rated health remained stable across ACEs exposure levels, while the association between PCEs and mental health outcomes and physical inactivity varied across ACEs exposure levels. Conclusions: Our results suggest that above median PCEs attenuate the association between ACEs and poor self-rated health, mental health problems, and physical inactivity in later life, and are negatively associated with these health problems even in the concurrent presence of ACEs. Interventions to promote PCEs can help to reduce unfavourable long-term health outcomes following childhood adversity. ACEs were associated with various health problems evaluated in this study. After controlling for ACEs, PCEs were associated with self-rated physical and mental health, depression, anxiety, suicidal attempt, and physical inactivity. Interventions that address PCEs should be promoted. [ABSTRACT FROM AUTHOR]

Promoting positive mental health, particularly through enhancing competencies (such as prosocial behaviors and learning skills), may help prevent the development of health risk behaviors in adolescence and thus support future well-being. Few studies have examined how mental health competencies in childhood are associated with adolescent health risk behaviors, which could inform preventative approaches. Using UK Millennium Cohort Study data (n = 10,142), we examined how mental health competence (MHC) measured at the end of elementary school (11 years) is associated with self-reported use of cigarettes, e-cigarettes, alcohol, illegal drugs, antisocial behavior, and sexual contact with another young person at age 14 years. A latent measure of MHC was used, capturing aspects of prosocial behavior and learning skills, categorized as high MHC, high–moderate MHC, moderate MHC, and low MHC. Logistic and multinomial regression estimated odds ratios and relative risk ratios for binary and categorical outcomes, respectively, before and after adjusting for confounders. Weights accounted for sample design and attrition and multiple imputation for item missingness. Those with low, moderate, or high-moderate MHC at age 11 years were more likely to have taken part in health risk behaviors at age 14 years compared with those with high MHC. The largest associations were seen for low MHC with binge drinking (relative risk ratio: 1.6 [95% confidence interval: 1.1–2.4]), having tried cigarettes (odds ratio: 2.2 [95% confidence interval: 1.6-3.1]) and tried illegal drugs (odds ratio: 2.0 [95% confidence interval: 1.3-3.1) after adjusting for confounders (which attenuated results but largely maintained significant findings). MHC in late childhood is associated with health risk behaviors in midadolescence. Interventions that increase children's MHC may support healthy development during adolescence, with the potential to improve health and well-being through to adulthood. [ABSTRACT FROM AUTHOR]

Abstract Background Determining risky behaviours of adolescents provides valuable information for designing appropriate intervention programmes for advancing adolescent’s health. However, these behaviours are not fully addressed by researchers in a comprehensive approach. We report the protocol of a mixed methods study designed to investigate the health risk behaviours of Moroccan adolescents with the goal of identifying suitable strategies to address their health concerns. Methods We used a sequential two-phase explanatory mixed method study design. The approach begins with the collection of quantitative data, followed by the collection of qualitative data to explain and enrich the quantitative findings. In the first phase, the global school-based student health survey (GSHS) was administered to 800 students who were between 14 and 19 years of age. The second phase engaged adolescents, parents and teachers in focus groups and assessed education documents to explore the level of coverage of health education in the programme learnt in the middle school. To obtain opinions about strategies to reduce Moroccan adolescents’ health risk behaviours, a nominal group technique will be used. Discussion The findings of this mixed methods sequential explanatory study provide insights into the risk behaviours that need to be considered if intervention programmes and preventive strategies are to be designed to promote adolescent’s health in the Moroccan school.

Introduction: University and college campuses may be the last setting where it is possible to comprehensively address the health of a large proportion of the young adult population. It is important that health promoters understand the collective challenges students are facing, and to better understand the broader lifestyle behavioural patterning evident during this life stage. The purpose of this study was to examine the clustering of modifiable health-risk behaviours and to explore the relationship between these identified clusters and mental health outcomes among a large Canadian university sample. Methods: Undergraduate students (n = 837; mean age = 21 years) from the University of Toronto completed the National College Health Assessment survey. The survey consists of approximately 300 items, including assessments of student health status, mental health and health-risk behaviours. Latent class analysis was used to identify patterning based on eight salient health-risk behaviours (marijuana use, other illicit drug use, risky sex, smoking, binge drinking, poor diet, physical inactivity, and insufficient sleep). Results: A three-class model based on student behavioural patterns emerged: "typical," "high-risk" and "moderately healthy." Results also found high-risk students reporting significantly higher levels of stress than typical students (χ2(1671) = 7.26, p < .01). Conclusion: Students with the highest likelihood of engaging in multiple health-risk behaviours reported poorer mental health, particularly as it relates to stress. Although these findings should be interpreted with caution due to the 28% response rate, they do suggest that interventions targeting specific student groups with similar patterning of multiple health-risk behaviours may be needed. [ABSTRACT FROM AUTHOR]

Poor diet, physical inactivity, tobacco smoking and alcohol consumption are major risk factors for chronic disease and premature mortality. These behaviours are of concern among higher education students and may be linked to psychological distress which is problematic particularly for students on programmes with practicum components such as nursing and teaching. Understanding how risk behaviours aggregate and relate to psychological distress and coping among this population is important for health promotion. This research examined, via a comprehensive survey undergraduate nursing/midwifery and teacher education students’ (n = 1557) lifestyle behaviour (Lifestyle Behaviour Questionnaire), self-reported psychological distress (General Health Questionnaire) and coping processes (Ways of Coping Questionnaire). The results showed that health- risk behaviours were common, including alcohol consumption (93.2%), unhealthy diet (26.3%), physical inactivity (26%), tobacco smoking (17%), cannabis use (11.6%) and high levels of stress (41.9%). Students tended to cluster into two groups: those with risk behaviours (n = 733) and those with positive health behaviours (n = 379). The group with risk behaviours had high psychological distress and used mostly passive coping strategies such as escape avoidance. The potential impact on student health and academic achievement is of concern and suggests the need for comprehensive health promotion programmes to tackle multiple behaviours. As these students are the nurses and teachers of the future, their risk behaviours, elevated psychological distress and poor coping also raise concerns regarding their roles as future health educators/promoters. Attention to promotion of health and well-being among this population is essential. [ABSTRACT FROM PUBLISHER]

Relations between personality and health-risk behaviours in university undergraduates were examined using multiple measures of personality across multiple samples (N = 1151). Big Five personality variables, at both factor and facet levels, were used to predict three specific health-risk behaviours: (a) tobacco consumption, (b) alcohol consumption and (c) speeding in an automobile. Our findings showed that low Conscientiousness and low Agreeableness were uniformly associated with this cluster of potentially health damaging behaviours. Extraversion was additionally associated with alcohol use. Interaction effects were found between Conscientiousness and Agreeableness on smoking and (for men only) on drinking. Other personality variables not centrally related to the Big Five, such as Risk-Taking (high) and Integrity (low), were also implicated in the present health-risk behaviours. Copyright © 2009 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Aim: Among Swedish pregnant teenage girls it is unusual to continue pregnancy and to choose to have a baby. Swedish teenage mothers can therefore be expected to differ from adult mothers, at a group level. The aim of this study was to describe and compare teenage mothers who were giving birth in hospital with adult mothers as to sociodemographic background, perception of health and social support. Methods: A descriptive comparative study was conducted over one year, in a county in south-western Sweden, which comprised a group of all teenage mothers aged 15-19, who gave birth at hospital (study group n=97) and the same number of adult mothers aged 25-29, matched for parity and birth of a baby closest to the index mother (reference group). Both groups answered a questionnaire regarding sociodemographic variables, lifestyle, health, self-esteem, depressive symptoms, and support. Information on the mothers' pregnancy and delivery was obtained from their maternal health and delivery charts. Results: Teenage mothers had more often been exposed to a difficult family situation, had more often experienced school failure than adult mothers, and showed health-risk behavior. Teenage mothers perceived less support, had lower self-esteem, and more depressive symptoms than adult mothers. Conclusions: Teenage mothers differed from adult mothers regarding family situation and health behavior as well as perception of support, self-esteem, and depressive symptoms, which may negatively influence their ability to cope with parenthood. Efforts should be made early in pregnancy to meet both health and support needs of teenage mothers. [ABSTRACT FROM AUTHOR]

Summary Objective: To identify the health-risk behaviour of various homogeneous clusters of individuals. Study design: The study was conducted in 13 of the 20 Croatian counties and in Zagreb, the Croatian capital. In the first stage, general practices were selected in each county. The second-stage sample was created by drawing a random subsample of 10% of the patients registered at each selected genera[ practice. Methods: The sample was divided into seven homogenous clusters using statistical methodology, combining multiple factor analysis with a hybrid clustering method. Results: Seven homogeneous clusters were identified, three composed of mates and four composed of females, based on statistically significant differences between selected characteristics (P<0.001). Although, in genera[, self-assessed health declined with age, significant variations were observed within specific age intervals. Higher levels of self-assessed health were associated with higher levels of education and/or socio-economic status. Many individuals, especially females, who self-reported poor health were heavy consumers of sleeping pills. Mates and females reported different health-risk behaviours related to lifestyle, diet and use of the healthcare system. Heavy alcohol and tobacco use, unhealthy diet, risky physical activity and non-use of the healthcare system influenced self-assessed health in males. Females were slightly less satisfied with their health than mates of the same age and educational level. Even highly educated females who took preventive healthcare tests and ate a healthy diet reported a less satisfactory self-assessed level of health than expected. Conclusion: Sociodemographic characteristics, life style, self-assessed health and use of the healthcare system were used in the identification of seven homogeneous population dusters. A comprehensive analysis of these dusters suggests health-related prevention and intervention efforts geared towards specific populations. [ABSTRACT FROM AUTHOR]

This study aimed to identify the prevalence of health-risk behaviours (alcohol use, tobacco smoking and gambling) and the associations between health-risk behaviours and injuries among youth (15-24 years) and young adults (25-39 years). A multi-stage cluster sampling survey was conducted in Chiang Mai, Thailand. The associations between health-risk behaviours and injuries were analysed using logistic regression and adjusted for potential confounders. Sample weights were applied in all analyses. Six-hundred-and-thirty participants were included. Fifty-three percent of males and 12.3% of females drank in the past three months. Smoking in the past three months was higher among males (38.5%) than females (0.7%). About a quarter of men and a fifth of the women had gambled in the past year. A total of 6.4% of males and 4.8% of females sought medical attention in the past year due to injuries. Compared to those without any of the three health-risk behaviours, the odds ratio for injuries requiring medical attention was 3.81 (95% CI: 1.33 to 10.90, p = 0.013) for those with two health-risk behaviours and 13.8 (95% CI: 4.24 to 45.10, p < 0.001) for those with all three health-risk behaviours. Injury prevention policies may need to incorporate interventions designed to assess multiple health-risk behaviours.

Objectives: The aim of this study was to elucidate the pathway of associations linking gambling, alcohol intake, smoking habit, cannabis consumption between each other and with demographic and socioeconomic variables., Setting and Participants: A survey was conducted in 2017 on a representative sample of 15 602 Italian 14-year-olds to 17-year-olds attending 201 secondary schools., Outcome Measures: Structural Equation Models analysis was used to assess the pathway between gambling, alcohol intake, smoking, cannabis consumption, demographics and socioeconomic factors., Results: Irrespective of socioeconomic or demographic variables, gambling is positively associated with alcohol and cannabis consumption, while cannabis consumption is predicted by smoking and by alcohol intake, smoking is predicted by alcohol intake. Adolescents with a higher weekly income are more at risk of gambling, drinking alcohol and smoking, while the degree of economic dissatisfaction was positively associated with alcohol intake, cannabis consumption and smoking. Maternal employment appeared to be positively associated with adolescents' smoking, alcohol intake and cannabis consumption., Conclusions: This is one of the first studies to shed light on the pathways of associations connecting various health-risk behaviours among adolescents with demographic and socioeconomic factors., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Background: Determining risky behaviours of adolescents provides valuable information for designing appropriate intervention programmes for advancing adolescent's health. However, these behaviours are not fully addressed by researchers in a comprehensive approach. We report the protocol of a mixed methods study designed to investigate the health risk behaviours of Moroccan adolescents with the goal of identifying suitable strategies to address their health concerns., Methods: We used a sequential two-phase explanatory mixed method study design. The approach begins with the collection of quantitative data, followed by the collection of qualitative data to explain and enrich the quantitative findings. In the first phase, the global school-based student health survey (GSHS) was administered to 800 students who were between 14 and 19 years of age. The second phase engaged adolescents, parents and teachers in focus groups and assessed education documents to explore the level of coverage of health education in the programme learnt in the middle school. To obtain opinions about strategies to reduce Moroccan adolescents' health risk behaviours, a nominal group technique will be used., Discussion: The findings of this mixed methods sequential explanatory study provide insights into the risk behaviours that need to be considered if intervention programmes and preventive strategies are to be designed to promote adolescent's health in the Moroccan school.

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., Competing Interests: Conflicts of Interest: None declared., (Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.)

Introduction: University and college campuses may be the last setting where it is possible to comprehensively address the health of a large proportion of the young adult population. It is important that health promoters understand the collective challenges students are facing, and to better understand the broader lifestyle behavioural patterning evident during this life stage. The purpose of this study was to examine the clustering of modifiable health-risk behaviours and to explore the relationship between these identified clusters and mental health outcomes among a large Canadian university sample., Methods: Undergraduate students (n = 837; mean age = 21 years) from the University of Toronto completed the National College Health Assessment survey. The survey consists of approximately 300 items, including assessments of student health status, mental health and health-risk behaviours. Latent class analysis was used to identify patterning based on eight salient health-risk behaviours (marijuana use, other illicit drug use, risky sex, smoking, binge drinking, poor diet, physical inactivity, and insufficient sleep)., Results: A three-class model based on student behavioural patterns emerged: "typical," "high-risk" and "moderately healthy." Results also found high-risk students reporting significantly higher levels of stress than typical students (χ2(1671) = 7.26, p < .01)., Conclusion: Students with the highest likelihood of engaging in multiple health-risk behaviours reported poorer mental health, particularly as it relates to stress. Although these findings should be interpreted with caution due to the 28% response rate, they do suggest that interventions targeting specific student groups with similar patterning of multiple health-risk behaviours may be needed.