Which measures of adiposity are related to Australian adolescent's perception of their weight?

Aim
To determine which measurement of adiposity – standardised body mass index (BMI-z), waist circumference or body fat percentage – is most closely correlated with adolescents' weight perception and whether this differs by gender.

Methods
Weight and height (used to calculate BMI-z), waist circumference and body fat percentage were measured in 2278 adolescents aged between 12 and 16 and compared with self-reported weight status.

Results
The distribution of subjects across the three weight categories (underweight, healthy weight and overweight) differed significantly between BMI-z, waist circumference and body fat percentage (p < 0.001). BMI-z was most closely aligned with perceived weight status in boys and girls, and waist circumference was also a good correlate of weight perception in boys. Boys were more likely than girls to underestimate their weight when it was defined by BMI-z; however, girls were equally likely to underestimate their weight when it was defined by waist circumference. The majority of adolescents underestimated their weight status when it was defined by BF%.

Conclusion
BMI-z is the closest correlate of self-perceived weight status. In the absence of internationally accepted reference values for waist circumference, BMI-z is the most appropriate measure to verify weight perception.

Investigation of consumer satisfaction with cognitive-behaviour therapy and sertraline in the treatment of adolescent depression

Objective: A new instrument, the Adolescent Depression Treatment Satisfaction Questionnaire (ADTSQ) was devised to measure the consumer satisfaction of depressed adolescents and their parents. The objectives of the paper were to present the psychometric proper ties ofthe ADTSQ and to investigate the relative consumer satisfaction with cognitive-behavioural therapy (CBT), sertraline (SRT) and a combined treatment of CBT and SRT (COMBINED) for the treatment of adolescent depression. In addition, participants were asked to rank their most preferred treatment from the following approaches: medication, individual counselling, group program and family therapy.Method: Thirty-eight adolescents with a unipolar depressive disorder and 37 parents who participated in a randomized clinical trial of CBT versus SRT versus COMBINED completed the ADTSQ following the completion of acute treatment.Results: The ADTSQ was found to have high internal consistency and exploratory factor analysis detected three underlying factors. High levels of consumer satisfaction were reported by both adolescents and parents in all three treatments. Those treated with CBT treatments reported higher levels of skill acquisition than those treated with SRT. Of the four treatment approaches, most parents and adolescentsrated individual counsellingas their first preference.Conclusions: The ADTSQ is a useful measure of consumer satisfaction for depressed adolescents and their parents. CBT, SRT and COMBINED were shown to have high consumer satisfaction with CBT's higher skills training content reflected in the participants' reports. Individual counselling was perceived as the most favourable choice of treatment for adolescent depression. Although limitations associated with the measurement of consumer satisfaction and of the study are acknowledged, it is recommended that the inclusion of consumer satisfaction measures be considered in clinical trials that examine treatment efficacy.

Adolescent peer group orientation, parent/attachment styles and mental health

Jennette Robinson’s research examined peer group characteristics and their relationship to parent/peer attachment, parenting styles, and adolescent functioning. Secure parental attachments were not associated with easier group access or participation in a greater number of groups. Evidence supported a relationship between parenting style and both group establishment and membership hierarchy.

Parent-related factors associated with service use for adolescent emotional and behavioural problems

 Investigation parent and family factors associated with service use for adolescent emotional and behavioural problems, finding that parent problem recognition, sociodemographic variables, prior service use, and parental overcontrol were significantly associated with service use longitudinally. Predictors of parent problem perception were also identified, extending existing research and models.

An examination of the demographic predictors of adolescent breakfast consumption, content, and context

Breakfast consumption is important to health; however, adolescents often skip breakfast, and an increased understanding of the breakfast consumption patterns of adolescents is needed. The purpose of this study was to identify the predictors of breakfast eating, including the content and context, in an adolescent sample from Australia and England.

Association between serotonin transporter genotype, brain structure and adolescent onset major depressive disorder: a longitudinal prospective study

The extent to which brain structural abnormalities might serve as neurobiological endophenotypes that mediate the link between the variation in the promoter of the serotonin transporter gene (5-HTTLPR) and depression is currently unknown. We therefore investigated whether variation in hippocampus, amygdala, orbitofrontal cortex (OFC) and anterior cingulate cortex volumes at age 12 years mediated a putative association between 5-HTTLPR genotype and first onset of major depressive disorder (MDD) between age 13–19 years, in a longitudinal study of 174 adolescents (48% males). Increasing copies of S-alleles were found to predict smaller left hippocampal volume, which in turn was associated with increased risk of experiencing a first onset of MDD. Increasing copies of S-alleles also predicted both smaller left and right medial OFC volumes, although neither left nor right medial OFC volumes were prospectively associated with a first episode of MDD during adolescence. The findings therefore suggest that structural abnormalities in the left hippocampus may be present prior to the onset of depression during adolescence and may be partly responsible for an indirect association between 5-HTTLPR genotype and depressive illness. 5-HTTLPR genotype may also impact upon other regions of the brain, such as the OFC, but structural differences in these regions in early adolescence may not necessarily alter the risk for onset of depression during later adolescence.

Smart-phone obesity prevention trial for adolescent boys in low-income communities: the ATLAS RCT

The goal of this study was to evaluate the impact of the Active Teen Leaders Avoiding Screen-time (ATLAS) intervention for adolescent boys, an obesity prevention intervention using smartphone technology.

The association of alcohol outlet density with illegal underage adolescent purchasing of alcohol

Purpose Although previous studies have suggested that greater community densities of alcohol sales outlets are associated with greater alcohol use and problems, the mechanisms are unclear. The present study examined whether density was associated with increased purchasing of alcohol by adolescents younger than the legal purchase age of 18 in Australia. Methods The number of alcohol outlets per 10,000 population was identified within geographic regions in Victoria, Australia. A state-representative student survey (N = 10,143) identified adolescent reports of purchasing alcohol, and multilevel modeling was then used to predict the effects for different densities of outlet types (packaged, club, on-premise, general, and overall). Results Each extra sales outlet per 10,000 population was associated with a significant increase in the risk of underage adolescent purchasing. The strongest effect was for club density (odds ratio = 1.22) and packaged (takeaway) outlet density (odds ratio = 1.12). Males, older children, smokers, and those with substance-using friends were more likely to purchase alcohol. Conclusions One mechanism by which alcohol sales outlet density may influence population rates of alcohol use and related problems is through increasing the illegal underage purchasing of alcohol. © 2015 Society for Adolescent Health and Medicine.

Adolescent predictors and environmental correlates of young adult alcohol use problems

To examine the rates of young adult alcohol and drug use and alcohol problems, adolescent predictors of young adult alcohol problems and correlations with young adult social, work and recreational environments.

Associations between behavior regulation, competence, physical activity, and health for adolescent females

This study investigated the association between the different types of behavior regulation and competence on sport and physical activity (PA) and perceived health, and the influence of school year level (ie, year 7 and year 11) and setting (ie, metropolitan and rural) on these relationships.

Evolution of adolescent mental health in a rapidly changing socioeconomic environment: a review of mental health studies in adolescents in India over last 10 years

Background: Significant changes in the economic, familial and social support aspects in India have occurred in recent times, making it an interesting naturalistic setting to observe the effects of a dynamic socioeconomic environment on behavioral and emotional disorders in adolescents. Objective: This systematic review attempts to synthesize and evaluate the available evidence on mental health disorders and interventions in adolescents in India in last 10 years as well as identify conceptual trends and methodological lacunae in these studies. Method: A systematic search of electronic databases was performed in March 2014 and 27 school and community based studies evaluating behavioral problems, psychiatric morbidity, stress, suicide-related behaviors, depression, anxiety, aggression, self concept in adolescents in India were reviewed. Conclusion: There is a wide variation in the reported prevalence of psychiatric morbidity and behavioral problems in Indian adolescents. Some of the risk and protective factors are similar to those identified by other International studies in this age group. These include female gender, academic difficulties, parental fights, strained familial relationships, school absenteeism, school dropout and other school related factors. However, there are certain variables that appear to be context specific and need further investigation. These are mother's working status, studying in Government institutions or belonging to a nuclear family as risk factors and praying as a coping skill, parental involvement as a protective factor for psychiatric disorders. The suspected upward trend in the psychiatric morbidity in this age group needs more studies to be established. © 2014 Elsevier B.V.

The effect of peer influence and selection processes on adolescent alcohol use : a systematic review of longitudinal studies.

Adolescent alcohol use remains an important public health concern. One of the most salient and consistent predictors for drinking behaviour among young people is peer influence. A systematic review of longitudinal studies that examined the effect of peer influence on adolescent alcohol use between January 1997 and February 2011 is presented. Twenty-two studies fulfilled inclusion criteria and were reviewed. All but one study confirmed affiliation with alcohol-using or deviant peers as prospective predictors for the development of adolescent alcohol use. Findings revealed that existing longitudinal studies that have used multivariate analytic techniques to segregate peer influence (whereby adolescents start drinking after exposure to alcohol-using friends) and peer selection (whereby adolescents that start drinking without alcohol-using friends subsequently seek out drinking peers) effects consistently report significant peer influence effects. However, studies are unable to elucidate the relative contribution and developmental sequence of peer influence and selection. Existing research is synthesised to model the developmental influence of peer processes on adolescent alcohol use. Future research directions are recommended to inform better designed investigations that can lead to more effective endeavours to address peer processes in prevention efforts.

Factors associated with parental rules for adolescent alcohol use

This study used the Resilient Families baseline survey to examine associations between the connectedness of parents within the school and parents' rules regarding their children's use of alcohol, prior participation in parenting education, and parents' demographic characteristics. The study involved parents of Year 7 students (mean age 12 years) at secondary schools in Melbourne, Australia (N = 1,238; 2004). Most parents (54%) had no connections with parents of other children in their child's school year. Allowing children to have sips of alcohol or drinks on special occasions was reported by 23% and 6% of parents, respectively, but neither was significantly associated with parental connectedness. Copyright © 2014 Informa Healthcare USA, Inc.