Developmental associations between victimization and body mass index from 3 to 10 years in a population sample

Cohort Profile: Quebec Longitudinal Study of Child Development (QLSCD)

PURPOSE

The Quebec Longitudinal Study of Child Development (QLSCD) was designed to examine the long-term associations of preschool physical, cognitive, social, and emotional development with biopsychosocial development across childhood, adolescence, and young adulthood.

METHODS

QLSCD is an ongoing prospective cohort including 2120 singletons born in 1997/1998 in the Canadian province of Quebec. So far, data have been collected annually or every 2 years from child ages 5 months to 21 years. The cohort currently includes 1245 participants. Data available include a range of environmental (e.g., family characteristics, child behaviour, educational attainment, mental health), biological (e.g., hair cortisol, genetic, epigenetic), and administrative data.

RESULTS

QLSCD has contributed to the understanding of children's psychosocial development, including the development of physical aggression and anxiety. QLSCD articles have advanced scientific knowledge on the influence of early childhood factors on childhood, adolescent, and young adult mental health, including the effect of participation in early childcare on cognitive and behavioural development, the developmental origins of adolescent and young adult mental health problems and suicide risk, and the development of interpersonal difficulties (e.g., peer victimisation) from preschool years to adolescence.

CONCLUSION

QLSCD has given major contributions to our understanding of the link between different aspects of child development and biopsychosocial development during the first two decades of life. Unique features include the presence of environmental, biological, and administrative data, long-term follow-up with frequent data collections, and use of data from multiple informants, including teachers, mothers, fathers, and the children themselves.

Connections between Friendship Quality, Peer Competence, and Obesity in Early Childhood through Adolescence

Background: Research indicates that youths with overweight and obesity often face difficulties in peer relationships. The current research examined longitudinal associations between youths' peer competence (i.e., successful interactions with peers), friendship quality (i.e., disclosure, conflict resolution, and companionship with a best friend), and body mass index (BMI) z-score when they were 3 to 15 years of age. Methods: A subsample of 1292 majority White families from the National Institute of Child Health and Human Development (NICHD) Study of Early Child Care and Youth Development (SECCYD) were included in the analyses. Measured height and weight were used to compute BMI z-scores. Youths reported on their friendship quality starting when they were 8-9 years. Peer competence was assessed with an observation of dyadic peer play when participants were 3 years old, and with maternal reports after that. Associations were examined using autoregressive cross-lagged path models. Results: Bidirectional associations between peer competence and friendship quality were noted when participants were 8-9 and 15 years old. Greater BMI z-scores when youths were 3 and 10-11 years old predicted lower peer competence when they were 15 and 11-12 years old, respectively. Peer competence when youths were 11-12 years old was negatively associated with BMI z-score at 15 years old. Multigroup Structural Equation Modeling (SEM) indicated that significant paths differed between boys and girls. Conclusions: Findings extend previous literature considering peer outcomes and weight by examining associations as early as 3 years old, and indicate the need for early outreach to buffer against detrimental effects on developing peer competencies, especially for girls.

An educational intervention to prevent overweight in pre-school years: a cluster randomised trial with a focus on disadvantaged families

BACKGROUND

Early prevention is a promising strategy for reducing obesity in childhood, and Early Years settings are ideal venues for interventions. This work evaluated an educational intervention with the primary aim of preventing overweight and obesity in pre-school children.

METHODS

A pragmatic, cluster randomised trial with a parallel, matched-pair design was undertaken. Interventions were targeted at both the cluster (Early Years' Centres, matched by geographical area) and individual participant level (families: mother and 2-year old child). At the cluster level, a staff training intervention used the educational resource Be Active, Eat Healthy. Policies and provision for healthy eating and physical activity were evaluated at baseline and 12-months. The intervention at participant level was the Healthy Heroes Activity Pack: delivered over 6 months by Centre staff to promote healthy eating and physical activity in a fun, interactive way. Child and parent height and weight were measured at four time-points over 2 years. The trial primary outcome was the change in BMI z-score of the child between ages 2 and 4 years. Secondary outcomes consisted of parent-reported measures administered at baseline and two-year follow-up.

RESULTS

Five pairs of Early Years' Centres were recruited. Four pairs were analysed as one Centre withdrew (47 intervention families; 34 control families). At the cluster level, improvement in Centre policies and practices was similar for both groups (p = 0.830). At the participant level, the intervention group reduced their mean BMI z-score between age 2 and 4 years (p = 0.002; change difference 0.49; 95% CI 0.17 to 0.80) whereas the control group showed increasing BMI z-score throughout. Changes in parent-reported outcomes and parent BMI (p = 0.582) were similar in both groups.

CONCLUSIONS

The Healthy Heroes educational resource deterred excess weight gain in pre-school children from poor socioeconomic areas. With training, Early Years' staff can implement the Healthy Heroes programme.

TRIAL REGISTRATION

ISRCTN22620137 Registered 21st December 2016.

Reciprocal Prospective Relationships Between Loneliness and Weight Status in Late Childhood and Early Adolescence

Adolescents who do not conform to weight ideals are vulnerable to disapproval and victimization from peers in school. But, missing from the literature is a prospective examination of weight status and feelings of loneliness that might come from those experiences. Using data from the Québec Longitudinal Study of Child Development, we filled that gap by examining the prospective associations between loneliness and weight status when the sample was aged 10-13 years. At ages 10, 12, and 13 years, 1042 youth (572 females; 92% from French speaking homes) reported on their loneliness and were weighed and measured. Family income sufficiency was included in our analyses given its relationship with weight status, but also its possible link with loneliness during early adolescence. The findings showed that (1) weight status and loneliness were not associated concurrently; (2) weight status predicted increases in loneliness from ages 12 to 13 years; and (3) loneliness predicted increases in weight from ages 12 to 13 years among female adolescents, but weight loss among male adolescents. The fact that loneliness was involved in weight gain for females suggests that interventions focused on reducing loneliness and increasing connection with peers during early adolescence could help in reducing obesity.

The Effect of Childhood Eye Disorders on Social Relationships during School Years and Psychological Functioning as Young Adults

Aims:

To determine (1) whether having a visible eye condition and/or treatment with glasses and/or occlusion in childhood has any impact on psychological and/or social outcomes during childhood and young adulthood and (2) whether there is an effect of age at treatment.

Methods:

A cohort of 160 participants was asked to take part in an online study. The cohort had previously taken part in a research study at Royal Preston Hospital from 1999–2006 when they were 3–8 years old (Buckley and Perkins 2010). Participants were divided into treatment and no-defect (control) groups and were invited to take part in the current study when they had reached age 18–21. Thirty-five (35) participants (22.5% of the total cohort) were recruited and completed a series of online questionnaires assessing recalled victimisation at school, current generalised anxiety, current depressive symptoms, current loneliness, current friendship quality, and adjustment to university/work. Questionnaire scores between treated patients and controls were compared.

Results:

Findings showed that young adults who received treatment during their pre-school years, compared to their peers who did not need treatment, reported higher current generalised anxiety and more victimisation when in school.

Those who received treatment in reception class were no different on psycho-social functioning compared to their peers; with both groups reporting higher victimisation than average compared to previous studies, and mild rates of anxiety.

Conclusions:

It appears that having a visible eye condition or treatment with glasses and/or occlusion commencing at pre-school has long term psychological implications, with scores on victimisation and current anxiety levels being higher for the pre-school treatment group compared to the pre-school no defect (control) group. Treatment plans and advice to parents should consider psycho-social outcomes of proposed treatment.

Victimization by Siblings in Children with Disability or Weight Problems

OBJECTIVE

Children with a physical disability, psychological disorder, or of nonnormative weight are often targets of peer victimization. Sibling victimization, however, is more common than peer victimization, but rarely explored. We investigated linkages between sibling victimization and whether children had a physical disability, psychological disorder (i.e., internalizing disorder, attention deficit disorder/attention-deficit hyperactivity disorder), and were perceived by parents as being thinner than average or overweight. Also, we explored how the extent and kinds of sibling victimization experiences were related to these characteristics in childhood.

METHODS

A US probability sample of adult caregivers of a child aged 0 to 9 (N = 780; 50% women; mean age 4.58) in 2-child households who completed a telephone interview.

RESULTS

Controlling for other forms of maltreatment and individual and family characteristics, children with a physical disability and parent-perceived children who are thinner than average and children who are overweight experienced more sibling victimization. Children with an internalizing disorder experienced less sibling victimization. Sibling victimization did not differ for children with and without ADHD. Children perceived to be overweight by parents and children with a physical disability were at increased risk of experiencing more types of sibling victimization. Children with a physical disability had greater odds of being victims of property victimization by a sibling.

CONCLUSION

Children with a physical disability or perceived as different from average weight are at risk for sibling victimization. Using a nationally representative sample, this is the first study to highlight the importance of screening for sibling victimization in families of children with a disability and/or nonnormative weight status.

A randomized, comparative pilot trial of family-based interpersonal psychotherapy for reducing psychosocial symptoms, disordered-eating, and excess weight gain in at-risk preadolescents with loss-of-control-eating

OBJECTIVE

Preadolescent loss-of-control-eating (LOC-eating) is a risk factor for excess weight gain and binge-eating-disorder. We evaluated feasibility and acceptability of a preventive family-based interpersonal psychotherapy (FB-IPT) program. FB-IPT was compared to family-based health education (FB-HE) to evaluate changes in children's psychosocial functioning, LOC-eating, and body mass.

METHOD

A randomized, controlled pilot trial was conducted with 29 children, 8 to 13 years who had overweight/obesity and LOC-eating. Youth-parent dyads were randomized to 12-week FB-IPT (n = 15) or FB-HE (n = 14) and evaluated at post-treatment, six-months, and one-year. Changes in child psychosocial functioning, LOC-eating, BMI, and adiposity by dual-energy-X-ray-absorptiometry were assessed. Missing follow-up data were multiply imputed.

RESULTS

FB-IPT feasibility and acceptability were indicated by good attendance (83%) and perceived benefits to social interactions and eating. Follow-up assessments were completed by 73% FB-IPT and 86% FB-HE at post-treatment, 60% and 64% at six-months, and 47% and 57% at one-year. At post-treatment, children in FB-IPT reported greater decreases in depression (95% CI -7.23, -2.01, Cohen's d = 1.23) and anxiety (95% CI -6.08, -0.70, Cohen's d = .79) and less odds of LOC-eating (95% CI -3.93, -0.03, Cohen's d = .38) than FB-HE. At six-months, children in FB-IPT had greater reductions in disordered-eating attitudes (95% CI -0.72, -0.05, Cohen's d = .66) and at one-year, tended to have greater decreases in depressive symptoms (95% CI -8.82, 0.44, Cohen's d = .69) than FB-HE. There was no difference in BMI gain between the groups.

DISCUSSION

Family-based approaches that address interpersonal and emotional underpinnings of LOC-eating in preadolescents with overweight/obesity show preliminary promise, particularly for reducing internalizing symptoms. Whether observed psychological benefits translate into sustained prevention of disordered-eating or excess weight gain requires further study.

Parent-Reported Bullying and Child Weight Gain between Ages 6 and 15

BACKGROUND

Childhood bullying has long-term negative mental and physical health correlates, including weight gain and symptoms of depression. The purpose of this research is to examine whether bullying in the first year of school is associated with greater weight gain by early adolescence and whether adolescent depressive symptoms mediate this association.

METHODS

Data were drawn from the Longitudinal Study of Australian Children. Children (N = 3929) were measured every 2 years; BMI and waist circumference were available from ages 4 to 15. Parents reported on bullying at age 6. Children reported on their depressive symptoms at ages 12-13.

RESULTS

Participants who weighed in the obese category at age 4 had an over 50% increased risk of being bullied in school at age 6. Being bullied at age 6 was associated with excess weight gain between ages 6 and 15, defined as either BMI or waist circumference. Depressive symptoms at age 12 partially explained the association between bullying and increases in adiposity. None of the associations varied by gender.

CONCLUSIONS

Similar to other forms of peer victimization, bullying early in school is associated with greater weight gain through early adolescence; depressive symptom is one mechanism that contributes to this association.

The Social and Emotional Lives of Overweight, Obese, and Severely Obese Children

This study examines inter- and intrapersonal problems associated with being overweight among one thousand one hundred sixty-four 6- to 7-year-olds (49% boys) in 29 rural schools. Socioemotional data include child self-reports, peer sociometrics, and teacher reports. Results support the hypothesis that children with weight problems struggle socially and emotionally, and extend current understanding of child obesity by demonstrating that problems appear early, are evident in a community sample, can be identified using standard sociometric methods, and are worse among children with severe obesity. Sociometric status difference between levels of obesity were also found. Although obese children were neglected by peers, severely obese children were rejected.

Childhood Bullying Victimization and Overweight in Young Adulthood: A Cohort Study

OBJECTIVE

To test whether bullied children have an elevated risk of being overweight in young adulthood and whether this association is: (1) consistent with a dose-response relationship, namely, its strength increases with the chronicity of victimization; (2) consistent across different measures of overweight; (3) specific to bullying and not explained by co-occurring maltreatment; (4) independent of key potential confounders; and (5) consistent with the temporal sequence of bullying preceding overweight.

METHOD

A representative birth cohort of 2,232 children was followed to age 18 years as part of the Environmental Risk Longitudinal Twin Study. Childhood bullying victimization was reported by mothers and children during primary school and early secondary school. At the age-18 follow-up, we assessed a categorical measure of overweight, body mass index, and waist-hip ratio. Indicators of overweight were also collected at ages 10 and 12. Co-twin body mass and birth weight were used to index genetic and fetal liability to overweight, respectively.

RESULTS

Bullied children were more likely to be overweight than non-bullied children at age 18, and this association was (1) strongest in chronically bullied children (odds ratio = 1.69; 95% confidence interval [CI] = 1.21-2.35); (2) consistent across measures of overweight (body mass index: b = 1.12; 95% CI = 0.37-1.87; waist-hip ratio: b = 1.76; 95% CI = 0.84-2.69); (3) specific to bullying and not explained by co-occurring maltreatment; (4) independent of child socioeconomic status, food insecurity, mental health, and cognition, and pubertal development; and (5) not present at the time of bullying victimization, and independent of childhood weight and genetic and fetal liability.

CONCLUSION

Childhood bullying victimization predicts overweight in young adulthood.

Bullying victimization in childhood predicts inflammation and obesity at mid-life: a five-decade birth cohort study

BACKGROUND

We aimed to test whether childhood bullying victimization increases risk for age-related disease at mid-life using biological markers including inflammation and adiposity, independent of other childhood risk factors and key adult variables.

METHOD

The present study was a 50-year prospective longitudinal birth cohort study of all births in Britain in 1 week in 1958. Exposure to bullying was assessed prospectively when participants were aged 7 and 11 years (27.7% occasionally bullied; 14.6% frequently bullied). Blood inflammation biomarkers [C-reactive protein (CRP) and fibrinogen] and adiposity [body mass index (BMI) and waist:hip ratio] were measured at age 45 years.

RESULTS

Participants who had been frequently bullied in childhood showed increased levels of CRP at mid-life [β = 0.07, 95% confidence interval (CI) 0.04-0.10] and higher risk for clinically relevant inflammation cut-off [CRP > 3 mg/l: 20.4% v. 15.9%, odds ratio (OR) = 1.35, 95% CI 1.12-1.64]. Women who were bullied in childhood had higher BMI than non-bullied participants and were at increased risk of being obese (BMI ≥ 30 kg/m2: occasionally bullied: 26.0% v. 19.4%, OR = 1.45, 95% CI 1.18-1.77; frequently bullied: 26.2% v. 19.4%, OR = 1.41, 95% CI 1.09-1.83). Findings remained significant when controlling for childhood risk factors (e.g. parental social class; participants' BMI and psychopathology in childhood) and key adult variables (e.g. adult social class, smoking, diet and exercise).

CONCLUSIONS

Bullied children show increases in risk factors for age-related disease in middle adulthood, independent of co-occurring childhood and adult risks. Given the high prevalence of bullying victimization in childhood, tackling this form of psychosocial stress early in life has the potential of reducing risk for age-related disease and its associated burden.