Prevalence, severity and impact of chronic pain among a representative cross-sectional study of New Zealand high school students.

AIM: To report the prevalence of self-reported chronic pain and severity among young people in New Zealand and explore the relationships between pain and mental health, substance use, socialisation and school engagement. METHODS: Prevalence of self-reported chronic pain frequency and severity are reported from an anonymous, representative cross-sectional self-administered health and well-being questionnaire by students aged 12-18 years in New Zealand. Multivariable models exploring chronic pain and mental health, substance use, socialisation and school engagement are reported controlling for age, sex, ethnicity, socio-economic status, disability and history of sexual abuse. RESULTS: Overall, 22.8% (95% confidence interval (CI) 21.2-24.5) of young people reported chronic pain for 6 months or more, with 3.2% (95% CI 3.1-4.5) reporting severe pain weekly or more often. Females and rural adolescents were more likely to report chronic and severe pain. Asian youth reported less pain than other ethnic groups. Increased severity of pain was associated more with poorer daily functioning and socialising than with frequency of pain. Severe pain occurring weekly or more often was more common among students who had a disability (2.3% 95% CI 1.8-2.7 vs. 9.8%, 95% CI 7.2-12.5) or a history of sexual abuse (2.4% 95% 1.9-2.9 vs. 8.5%, 95% CI 6.3-10.5). Those reporting chronic pain had higher proportions of self-reported significant depressive symptoms, lower well-being, lower school engagement and lower access to health care, particularly for those reporting higher levels of intensity and frequency of pain. CONCLUSIONS: Chronic pain is common in adolescent populations, and has a significant association with decreased daily functioning, socialising, school engagement and mental well-being. Adolescents with chronic pain report significant unmet health-care needs.

Improving the quality of care for adolescents and young adults on an adult medical ward.

BACKGROUND: Adolescents and young adults have health needs that are distinctly different from children and adults. A lack of education and training is reported by clinicians to be one of the main barriers to providing comprehensive developmentally appropriate care to young people, including the provision of confidential healthcare and taking a holistic approach. AIM: This study documents the current provision of care to young people on an adult inpatient medical ward at a large tertiary teaching hospital in Auckland. METHODS: Forty-three staff and 40 patients aged 16-24 years on an adult medical ward completed surveys, which were based on the Northern Regional Alliance, Northern Regional Youth Health Network Standards for Quality Care for Adolescents and Young Adults in Secondary or Tertiary Care. RESULTS: Few (12%) staff had completed any specific training in looking after adolescent and young adult patients. Confidentiality was not routinely discussed with young people by 50% of clinicians, and only 23% of staff reported that they see a young person alone as part of their consultation or admission. Less than half of young people reported receiving a comprehensive psychosocial assessment that included sexual health, mental health and suicide, and safety. CONCLUSIONS: Key components of comprehensive developmentally appropriate healthcare were not regularly carried out by staff on an adult medical ward. These findings suggest that further education and training, and service improvements are needed in tertiary adult hospital settings.

Psychosocial burden of inflammatory bowel disease in adolescents and young adults.

BACKGROUND: This study examined the psychosocial burden of inflammatory bowel disease (IBD) in young people aged 15-25 years attending a tertiary specialist health centre for adolescents and young adults in Brisbane. AIMS: To describe the impact of IBD on psychosocial well-being in young people and to compare well-being in the IBD cohort to well-being among young people with other chronic conditions, with a view to identifying characteristics and challenges unique to those with IBD. METHODS: Young people with IBD provided demographic information and psychosocial data through a cross-sectional self-report survey. Psychosocial data included the Kessler Psychological Distress Scale, Perceived Stress Scale, Brief Illness Perception Questionnaire, World Health Organisation Well-being Index, Paediatric Quality of Life Inventory, Short Quality of Life Questionnaire for IBD, Multidimensional Scale of Perceived Social Support, Connor Davidson Resilience Scale 2 and the Multidimensional Health Locus of Control Scale. RESULTS: Surveys were collected from 51 young people with IBD and compared with surveys from 210 young people with juvenile rheumatic disease (n = 31), phenylketonuria (n = 21), cystic fibrosis (n = 33), renal transplants (n = 14) and craniomaxillofacial conditions (n = 111). On the psychosocial domains, 41% of young people with IBD had poor well-being and 37% were at risk of depression. When assessed against the comparison group, young people with IBD reported higher depressive symptoms (P = 0.04), worse illness perceptions (P < 0.01) and lower internal locus of control (P < 0.01). CONCLUSIONS: Early recognition and treatment of depression and other psychosocial comorbidities within integrated pathways of care is crucial in adolescents and young adults with IBD and likely to improve the course of IBD and their overall health and well-being. Interventions aimed at enhancing self-efficacy and increasing public awareness are also likely to be helpful.

Body size and weight, and the nutrition and activity behaviours of sexual and gender minority youth: findings and implications from New Zealand.

OBJECTIVE: To describe the body size and weight, and the nutrition and activity behaviours of sexual and gender minority (SGM) students and compare them with those of exclusively opposite-sex-attracted cisgender students. Male and female SGM students were also compared. DESIGN: Data were from a nationally representative health survey. SETTING: Secondary schools in New Zealand, 2012. PARTICIPANTS: A total of 7769 students, 9 % were SGM individuals. RESULTS: Overall, weight-control behaviours, poor nutrition and inactivity were common and, in many cases, more so for SGM students. Specifically, male SGM students (adjusted OR; 95 % CI) were significantly more likely to have tried to lose weight (1·95; 1·47, 2·59), engage in unhealthy weight control (2·17; 1·48, 3·19), consume fast food/takeaways (2·89; 2·01, 4·15) and be physically inactive (2·54; 1·65, 3·92), and were less likely to participate in a school sports team (0·57; 0·44, 0·75), compared with other males. Female SGM students (adjusted OR; 95 % CI) were significantly more likely to engage in unhealthy weight control (1·58; 1·20, 2·08), be overweight or obese (1·24; 1·01, 1·53) and consume fast food/takeaways (2·19; 1·59, 3·03), and were less likely to participate in a school sports team (0·62; 0·50, 0·76), compared with other females. Generally, female SGM students were more negatively affected than comparable males, except they were less likely to consume fast food/takeaways frequently (adjusted OR; 95 % CI: 0·62; 0·40, 0·96). CONCLUSIONS: SGM students reported increased weight-control behaviours, poor nutrition and inactivity. Professionals, including public health nutritionists, must recognize and help to address the challenges facing sexual and gender minorities.

Trends in weight-related attitudes and behaviours among New Zealand adolescents, between 2007 and 2012.

AIM: To explore secular trends of adolescent weight control concerns and behaviours, between 2007 and 2012, and determine if these vary by body size. METHODS: Data were drawn from two nationally representative youth health surveys, Youth'07 and Youth'12. Multiple logistic regression models were used to determine differences in the prevalence of weight control behaviours and concerns between the two time points, controlling for socio-demographic variables. RESULTS: Between 2007 and 2012, both boys and girls were significantly more likely to report concerns about their weight, though the prevalence of trying to lose weight increased for boys, but not girls. Trends in weight control behaviours varied by body size for boys and girls. Perhaps the most striking findings were the increases in proportions of underweight girls and healthy weight boys who were trying to lose weight. CONCLUSIONS: The current study highlights the growing concerns that young people are experiencing in relation to weight control. Given the persistently high rates of adolescent obesity in New Zealand and globally, greater support for young people with regards to healthy eating and weight management is warranted.

Factors Associated with Academic Achievement for Sexual and Gender Minority and Heterosexual Cisgender Students: Implications from a Nationally Representative Study.

Research on sexual and gender minority student achievement indicates that such students report lowered achievement relative to other students. Increased victimization and less school belonging, amongst other factors, have been identified as contributing to these inequalities. However, supportive schooling structures and caregiver support may support their achievement. A nationally representative survey of secondary school students was used to identify specific factors that support achievement for sexual minority (n = 485), gender minority (n = 298), and heterosexual cisgender (where one's sex assigned at birth "matches" a binary gender identity, i.e., a male assigned at birth identifies as a boy/man, n = 7064) students in New Zealand. While reported victimization did not affect achievement for sexual and gender minority students, school belonging, and teacher expectations of success, emerged as significant factors. Differences emerged between sexual minority and gender minority achievement factors, suggesting a range of detailed policy implications and recommendations.

Exposure to suicide behaviour and individual risk of self-harm: Findings from a nationally representative New Zealand high school survey.

PURPOSE: To examine whether there is an association between students self-reported suicide attempts and non-suicidal self-injury and exposure to suicidal behaviour among friends, family members or within school communities. METHODS: A cross-sectional analysis of a nationally representative health and well-being survey of 8500 New Zealand high school students conducted from March through November 2012. Students' self-reported suicide attempts and repeated non-suicidal self-injury was examined in relation to student reports of self-harming behaviour among friends and family as well as data from school administrators of completed suicides within the school community. RESULTS: Almost 1 in 20 (4.5%) students reported a suicide attempt in the last 12 months and 7.9% reported repeated non-suicidal self-injury in the last 12 months. The risk of both suicide attempts and repeated non-suicidal self-injury was highest among females, students from homes with economic deprivation and among students reporting an episode of low mood in the previous 12 months. Students exposed to suicide attempts or completed suicide among friends and/or family members were at increased risk of reporting attempted suicide and repeated non-suicidal self-injury in the last year. There was no association between completed suicide in school community and students self-reported suicide attempts or repeated non-suicidal self-injury. CONCLUSIONS: Low mood and exposure to suicide attempts of friends and family members are associated with suicide attempts and repeated non-suicidal self-injury in New Zealand high school students. This research highlights importance of supporting adolescents with low mood and exposed to suicide of friends and family.

Energy drink consumption among New Zealand adolescents: Associations with mental health, health risk behaviours and body size.

AIM: With the increase in popularity of energy drinks come multiple concerns about the associated health indicators of young people. The current study aims to describe the frequency of consumption of energy drinks in a nationally representative sample of adolescents and to explore the relationship between energy drink consumption and health risk behaviours, body size and mental health. METHODS: Data were collected as part of Youth'12, a nationally representative survey of high school students in New Zealand (2012). In total, 8500 students answered a comprehensive questionnaire about their health and well-being, including multiple measures of mental well-being, and were weighed and measured for height. RESULTS: More than one-third (35%) of young people consumed energy drinks in the past week, and 12% consumed energy drinks four or more times in the past week. Energy drink consumption was significantly associated with greater depressive symptoms, greater emotional difficulties and lower general subjective well-being. Frequent energy drink consumption was also associated with binge drinking, smoking, engagement in unsafe sex, violent behaviours, risky motor vehicle use and disordered eating behaviours. There was no association between consumption of energy drinks and student body size. CONCLUSIONS: Consumption of energy drinks is associated with a range of health risk behaviours for young people. Strategies to limit consumption of energy drinks by young people are warranted.

Dietary behaviours and the mental well-being of New Zealand adolescents.

AIM: To examine the associations between diet and mental health indicators in adolescents. METHODS: Data were drawn from the Youth 2012 survey, a national survey of the health and well-being of adolescents in New Zealand (n = 8500). Multiple regression models were used to determine the associations between healthy and unhealthy eating and mental health indicators while adjusting for sex, age, ethnicity, small area deprivation and household poverty as covariates. RESULTS: Approximately 30% of young people in the lowest quartile for healthy eating reported significant depressive symptoms. Greater healthy eating was significantly associated with fewer depressive symptoms, better well-being and fewer emotional difficulties (all P < 0.001 after adjusting for covariates). Greater unhealthy eating was significantly associated with greater depressive symptoms, poorer well-being and greater emotional difficulties (all P < 0.001 after adjusting for covariates). CONCLUSIONS: Findings from this study contribute to a growing body of literature that indicate that eating behaviours are associated with mental health indicators among adolescents. Findings from the current study suggest that efforts to enhance healthy eating may also have a positive impact on mental health.

Uneven reductions in high school students' alcohol use from 2007 to 2012 by age, sex, and socioeconomic strata.

BACKGROUND: Many Western countries have reported declines in adolescent alcohol use. This study examined changes in adolescent alcohol use in New Zealand between 2007 and 2012 and explored variations across sociodemographic strata. METHODS: Data from 2 nationally representative, cross-sectional high school surveys conducted in 2007 (n = 7709) and 2012 (n = 7266) were examined. Changes in the prevalence of drinking in the past 4 weeks were examined among the total sample, as well as the frequency of drinking in the past 4 weeks and typical drinking-occasion quantity among drinkers. Only students residing in urban areas were included. Variation in changes was investigated across 4 demographic groups characterized by age (<16 years, ≥16 years) and sex. Interactions with household- and neighborhood-level socioeconomic position (SEP) identified any differential changes between socioeconomic strata. RESULTS: From 2007 to 2012, significantly fewer students consumed alcohol in the past 4 weeks. Interaction analyses demonstrated that, among young females (<16 years), declines were significantly greater among those of high household SEP when compared with those of low household SEP. Among drinkers, reductions in the frequency of drinking were found among all demographic groups and SEP strata. Interaction analyses revealed that only young males (<16 years) showed significantly reduced typical drinking-occasion quantities. Among young females, significant interactions revealed a shift towards increasing typical drinking-occasion quantities among those of low household and neighborhood SEP, whereas their more advantaged counterparts showed no significant change over time. CONCLUSIONS: Fewer drinking occasions characterized the major declines in adolescent drinking between 2007 and 2012. Whereas young males showed reductions in the typical quantity consumed, young females of low household and neighborhood SEP progressed towards higher typical quantities. To address the uneven distribution of alcohol-related harm and improve the targeting of harm reduction initiatives, it remains imperative to examine changes in both the overall shift and shape of the distribution curve.

Home Gardening and the Health and Well-Being of Adolescents.

BACKGROUND: The current article explores the associations between home gardening and dietary behaviors, physical activity, mental health, and social relationships among secondary school students in New Zealand. METHOD: Data were drawn from a national youth health and well-being survey, conducted in 2012. In total, 8,500 randomly selected students from 91 randomly selected secondary schools completed the survey. RESULTS: Two thirds of students had a vegetable garden at home and one quarter of all students participated in home gardening. Students participating in gardening were most likely to be male, of a Pacific Island ethnicity, of younger age, and living in a rural area. Gardening was positively associated with healthy dietary habits among students, such as greater fruit and vegetable consumption. Gardening was also positively associated with physical activity and improved mental health and well-being. Students who participate in gardening report slightly lower levels of depressive symptoms and enhanced emotional well-being and experience higher family connection than students who do not participate in gardening. CONCLUSIONS: Gardening may make a difference for health and nutrition behaviors and may contribute to adolescents' health and well-being in a positive manner. Health promoters should be encouraged to include gardening in future interventions for young people.

School gardens and adolescent nutrition and BMI: Results from a national, multilevel study.

OBJECTIVE: The aim of the current study was to determine the impact of school gardens on student eating behaviors, physical activity and BMI in New Zealand secondary schools. The current study also aimed to determine if school gardens could buffer the association between household poverty and adolescent BMI. METHODS: Data were drawn from a national study of the health and wellbeing of New Zealand secondary school students (n=8500) conducted in 2012. Multilevel regression models were used to determine the association between school gardens (school-level) and student nutrition behaviors, physical activity and measured BMI (student-level). RESULTS: Approximately half of secondary schools had a fruit/vegetable garden for students to participate in. School gardens were associated with lower student BMI (p=0.01) and lower prevalence of overweight (p<0.01). CONCLUSIONS: School gardens appear to have a positive impact on student health. Future research may explore how school gardens are implemented to better understand their impact and to extend the benefits beyond the school community.

The association between socioeconomic deprivation and secondary school students' health: findings from a latent class analysis of a national adolescent health survey.

BACKGROUND: The aims of this study were to examine indicators of socioeconomic deprivation among secondary school students and to determine associations between household poverty, neighbourhood deprivation and health indicators. METHODS: Data were from a nationally representative sample of 8500 secondary school students in New Zealand who participated in a health survey in 2012. Latent class analyses were used to group students by household poverty based on nine indicators of household socioeconomic deprivation: no car; no phone; no computer; their parent/s worry about not having enough money for food; more than two people sharing a bedroom; no holidays with their families; moving home more than twice that year; garages or living rooms used as bedrooms; and, no parent at home with employment. Multilevel generalized linear models were used to estimate the cross-level interaction between household poverty and neighbourhood deprivation with depressive symptoms, cigarette smoking and overweight/ obesity. RESULTS: Three groups of students were identified: 80 % of students had low levels of household poverty across all indicators; 15 % experienced moderate poverty; and 5 % experienced high levels of poverty. Depressive symptoms and cigarette smoking were 2-3 times higher in the poverty groups compared to student's not experiencing poverty. There were also higher rates of overweight/ obesity among students in the poverty groups compared to students not experiencing poverty, but once covariates were accounted for the relationship was less clear. Of note, students experiencing poverty and living in affluent neighbourhoods reported higher levels of depressive symptoms and higher rates of cigarette smoking than students experiencing poverty and living in low socioeconomic neighbourhoods. This cross-level interaction was not seen for overweight/ obesity. CONCLUSIONS: Measures of household socioeconomic deprivation among young people should not be combined with neighbourhood measures of socioeconomic deprivation due to non-linear relationships with health and behaviour indicators. Policies are needed that address household poverty alongside efforts to reduce socioeconomic inequalities in neighbourhoods.

The Association Between Supportive High School Environments and Depressive Symptoms and Suicidality Among Sexual Minority Students.

The purpose of this study was to determine if sexual minority students in supportive school environments experienced fewer depressive symptoms and lower rates of suicide ideation, plans and attempts ("suicidality") than sexual minority students in less supportive school environments. In 2007, a nationally representative sample (N = 9,056) of students from 96 high schools in New Zealand used Internet tablets to complete a health and well-being survey that included questions on sexual attractions, depressive symptoms, and suicidality. Students reported their experience of supportive environments at school and gay, lesbian, bisexual, and transgender (GLBT) bullying, and these items were aggregated to the school level. Teachers (n = 2,901) from participating schools completed questionnaires on aspects of school climate, which included how supportive their schools were toward sexual minority students. Multilevel models were used to estimate school effects on depressive symptoms and suicidality controlling for background characteristics of students. Sexual minority students were more likely to report higher levels of depressive symptoms and suicidality than their opposite-sex attracted peers (p < .001). Teacher reports of more supportive school environments for GLBT students were associated with fewer depressive symptoms among male sexual minority students (p = .006) but not for female sexual minority students (p = .09). Likewise in schools where students reported a more supportive school environment, male sexual minority students reported fewer depressive symptoms (p = .006) and less suicidality (p < .001) than in schools where students reported less favorable school climates. These results suggest that schools play an important role in providing safe and supportive environments for male sexual minority students.

Differential Effects of Neighborhood Type on Adolescent Alcohol Use in New Zealand.

Identifying neighborhood typologies associated with adolescent alcohol use can inform the development of harm reduction strategies. Utilizing data from a nationally representative youth survey (n = 4267) in New Zealand, latent class analysis was used to categorize neighborhood types (defined by 10 demographic, social and environmental indicators) to investigate their association with alcohol consumption and related harm. Three neighborhood types were distinguished: (1) "high outlet density and economic deprivation" (30 % of all neighborhoods); (2) "high deprivation, social disorganization, and unsafe" (38 %); and (3) "higher income, safe, and socially organized" (32 %). Significant ethnic variation was evident between neighborhood types. There was an age-group interaction in the main effects with significant associations between neighborhood type and drinking measures and harm most apparent among younger adolescents (<16 years), as described next. Compared to students residing in "higher income, safe, and socially organized" neighborhoods, the frequency of binge drinking and high typical consumption was significantly higher in students residing in "high outlet density and economic deprivation" and "high deprivation, social disorganization, and unsafe", with students residing in "high outlet density and economic deprivation" also experiencing higher levels of alcohol-related harm. The findings that neighborhoods characterized by high deprivation and alcohol outlet density and low social organization and perceptions of safety were associated with risky drinking patterns and harm, specifically among young adolescents, underscores the importance of adopting a developmental approach to the study of contextual effects on adolescents.

What has changed from 2001 to 2012 for sexual minority youth in New Zealand?

AIM: To provide an overview of the health and well-being of sexual minority high school students in New Zealand, investigate differences between sexual minority youth (SMY) and exclusively opposite-sex-attracted youth (EOSAY), and examine changes across survey waves. METHODS: Nationally representative cross-sectional surveys were completed in 2001 (n = 9011), 2007 (n = 8002) and 2012 (n = 8167). Logistic regressions were used to examine the associations between selected outcomes and sexual attraction across survey waves. RESULTS: SMY accounted for 6% of participants in all three waves, with a greater proportion being 'out' in 2012 (P < 0.0001). SMY were more likely to work as volunteers (OR = 1.37) than EOSAY, and the majority of SMY reported good general health, liking school and having caring friends. With the exceptions of binge drinking and being driven dangerously by someone, SMY reported comparatively diminished health and well-being relative to EOSAY. Increasing proportions of SMY had depressive symptoms from 2001 (OR = 2.38) to 2012 (OR = 3.73) compared with EOSAY. There were some differences between the sexes; female SMY were less likely to report positive family relationships (OR = 0.59) and liking school (OR = 0.55), and they were more likely to have been hit (2012 OR = 1.95) than female EOSAY. Male SMY reported especially high rates of suicide attempts (2012 OR = 5.64) compared with male EOSAY. CONCLUSIONS: Health services, schools, communities and families must be more responsive to the needs of SMY to ensure that disparities are addressed.

Stability and change in the mental health of New Zealand secondary school students 2007-2012: results from the national adolescent health surveys.

OBJECTIVE: To describe the self-reported mental health of New Zealand secondary school students in 2012 and to investigate changes between 2007 and 2012. METHODS: Nationally representative health and wellbeing surveys of students were completed in 2007 (n=9107) and 2012 (n=8500). Logistic regressions were used to examine the associations between mental health and changes over time. Prevalence data and adjusted odds ratios are presented. RESULTS: In 2012, approximately three-quarters (76.2%, 95% CI 74.8-77.5) of students reported good overall wellbeing. By contrast (also in 2012), some students reported self-harming (24.0%, 95% CI 22.7-25.4), depressive symptoms (12.8%, 95% CI 11.6-13.9), 2 weeks of low mood (31%, 95% CI 29.7-32.5), suicidal ideation (15.7%, 95% 14.5-17.0), and suicide attempts (4.5%, 95% CI 3.8-5.2). Between 2007 and 2012, there appeared to be slight increases in the proportions of students reporting an episode of low mood (OR 1.14, 95% CI 1.06-1.23, p=0.0009), depressive symptoms (OR 1.16, 95% CI 1.03-1.30, p=0.011), and using the Strengths and Difficulties Questionnaire - emotional symptoms (OR 1.38, 95% CI 1.23-1.54, p<0.0001), hyperactivity (OR 1.16, 95% CI 1.05-1.29, p=0.0051), and peer problems (OR 1.27, 95% CI 1.09-1.49, p=0.0022). The proportion of students aged 16 years or older reporting self-harm increased slightly between surveys, but there was little change for students aged 15 years or less (OR 1.29, 95% CI 1.15-1.44 and OR 1.10, 95% 0.98-1.23, respectively, p=0.0078). There were no changes in reported suicidal ideation and suicide attempts between 2007 and 2012. However, there has been an improvement in self-reported conduct problems since 2007 (OR 0.78, 95% CI 0.70-0.87, p<0.0001). CONCLUSIONS: The findings suggest a slight decline in aspects of self-reported mental health amongst New Zealand secondary school students between 2007 and 2012. There is a need for ongoing monitoring and for evidence-based, accessible interventions that prevent mental ill health and promote psychological wellbeing.

Equivalence of the short form of the reynolds adolescent depression scale across groups.

The present study examines the equivalence of the short-form version of the Reynolds Adolescent Depression Scale (RADS-SF) for measuring depression in adolescents across gender, age, and ethnic groups. A sample of 8,692 randomly selected New Zealand secondary school students participated in the Youth'07 Health and Wellbeing Survey that included the RADS-SF. The reliability was assessed using Cronbach's alpha and item-total correlations. The validity was assessed using multigroup confirmatory factor analysis, and correlation to other questions in the survey considered likely to be associated with depression. The RADS-SF scores ranged from 10 to 40 (Mdn = 18), with a mean score of 19.14 (SD = 6.19) and Cronbach's alpha of .88. Configural, metric, and scalar equivalence was supported across gender, age, and ethnic groups (New Zealand European, Maori, Pacific, Asian, and Other), with all tested models having good fit to the data. The correlations between the RADS-SF and other variables such as suicidal ideation and well-being were also equivalent across groups. The RADS-SF was found to be equivalent in measuring depression across age, ethnic groups, and gender in a large population of New Zealand adolescents.

Adolescence and the social determinants of health.

The health of adolescents is strongly affected by social factors at personal, family, community, and national levels. Nations present young people with structures of opportunity as they grow up. Since health and health behaviours correspond strongly from adolescence into adult life, the way that these social determinants affect adolescent health are crucial to the health of the whole population and the economic development of nations. During adolescence, developmental effects related to puberty and brain development lead to new sets of behaviours and capacities that enable transitions in family, peer, and educational domains, and in health behaviours. These transitions modify childhood trajectories towards health and wellbeing and are modified by economic and social factors within countries, leading to inequalities. We review existing data on the effects of social determinants on health in adolescence, and present findings from country-level ecological analyses on the health of young people aged 10-24 years. The strongest determinants of adolescent health worldwide are structural factors such as national wealth, income inequality, and access to education. Furthermore, safe and supportive families, safe and supportive schools, together with positive and supportive peers are crucial to helping young people develop to their full potential and attain the best health in the transition to adulthood. Improving adolescent health worldwide requires improving young people's daily life with families and peers and in schools, addressing risk and protective factors in the social environment at a population level, and focusing on factors that are protective across various health outcomes. The most effective interventions are probably structural changes to improve access to education and employment for young people and to reduce the risk of transport-related injury.

Prevalence of severe obesity among New Zealand adolescents and associations with health risk behaviors and emotional well-being.

OBJECTIVE: To describe the prevalence of severe obesity among New Zealand young people attending secondary school and the associations of severe obesity with health risk behaviors and emotional well-being. STUDY DESIGN: A random sample of 9107 secondary school students in New Zealand participated in a 2007 health survey. Participants had their height and weight measured and answered an anonymous survey on multiple aspects of their health and well-being. RESULTS: Overall, 2.5% of students met the International Obesity Task Force definition of severe obesity. Students with severe obesity had more weight-related concerns, were more likely to have used unhealthy weight control strategies, and were more likely to experience bullying compared with healthy weight students. For example, students with severe obesity were 1.7 times more likely to have been bullied at school (95% CI 1.2-2.7) and 1.9 times more likely to vomit for weight loss (95% CI 1.1-3.3) than were healthy weight students. Indicators of emotional well-being and most health risk behaviors were similar among young people with severe obesity and a healthy weight. CONCLUSIONS: Clinicians who work with young people with severe obesity should prioritize discussing issues of bullying and healthy weight control strategies with families and their children.