The effect of childhood deprivation on weight status and mental health in childhood and adolescence: longitudinal findings from the Millennium Cohort Study

Psychological well-being and the reversal of childhood overweight and obesity in the UK: a longitudinal national cohort study

OBJECTIVE

This study aimed to examine the prospective association between psychological well-being and overweight and obesity reversal.

METHODS

We analyzed data of UK children with overweight or obesity at ages 11 (n = 4556, baseline), 14 (n = 3791, baseline), and 17 years (follow-up). Psychological well-being-related measures were characterized into indexes of caregiver-reported child mental health and child-reported psychosocial well-being, with a higher score indicating better mental health or psychosocial well-being. Weight changes were presented as reversal versus persistence of overweight or obesity and residualized-change BMI z scores. Data were analyzed using regression analysis.

RESULTS

Better child mental health and psychosocial well-being at age 11 years were independently associated with increased odds of reversal versus persistence (odds ratio [OR] = 1.16, 95% CI: 1.03 to 1.29; OR = 1.29, 95% CI: 1.15 to 1.44, respectively) and decreased BMI z scores (β = -0.08, 95% CI: -0.13 to -0.03; β = -0.07, 95% CI: -0.11 to -0.03, respectively) at age 17 years. However, neither of the indexes was associated with weight changes when measured at age 14 years. Analyses between psychological well-being-related measures and timing of measures indicated that psychological well-being-related measures were more likely to prospectively predict weight changes when measured at age 11 versus age 14 years.

CONCLUSIONS

Better psychological well-being at age 11 years is a prognostic factor that may be associated with an increased likelihood of reversing childhood overweight and obesity by age 17 years.

Socioeconomic deprivation, health and healthcare utilisation among millennials

This study estimates and decomposes components of different measures of inequality in health and healthcare use among millennial adolescents, a sizeable cohort of individuals at a critical stage of life. Administrative data from the UK Hospital Episode Statistics are linked to Next Steps, a survey collecting information about millennials born between 1989 and 1990, providing a uniquely comprehensive source of health and socioeconomic variables. Socioeconomic inequalities in psychological distress, long-term illness and the use of emergency and outpatient hospital care are measured using a corrected concentration index. Shapley-Shorrocks decomposition techniques are employed to measure the relative contributions of childhood socioeconomic circumstances to adolescents' health and healthcare inequality of opportunity. Results show that income-related deprivation contributes to significant inequalities in mental and physical health among adolescents aged between 15 and 17 years old. There are also pro-rich inequalities in the use of specific outpatient hospital services (e.g., orthodontic and mental healthcare), while pro-poor disparities are found in the use of emergency care services. Regional and parental circumstances are leading factors in influencing inequality of opportunity in the use of hospital care among adolescents. These findings shed light on the main drivers of health inequalities during an important stage of human development and have potentially important implications on human capital formation across the life-cycle.

Mediating mechanisms of the relationship between exposure to deprivation and threat during childhood and adolescent psychopathology: evidence from the Millennium Cohort Study

The key aim of our study was to examine pathways from exposure to childhood adversities (i.e., deprivation and threat) to adolescent psychopathology. The assessed mediating mechanisms included cognitive ability and emotion regulation, as proposed by the Dimensional Model of Adversity and Psychopathology (DMAP). The study comprised participants from the nationally representative Millennium Cohort Study. Latent scores for deprivation and threat were derived using confirmatory factor analysis from indicators collected when participants were at age of 9 months, 3 and 5 years. Cognitive ability was measured using the Verbal Similarities subscale of the British Ability Scales II at age 11, and emotion regulation was measured using emotion dysregulation subscale of the Child Social Behavioural Questionnaire at age 7. Psychopathology, defined as psychological distress, was assessed using the Kessler 6 scale at age 17. We conducted causal mediation analysis adjusting for multiple confounding factors. We did not find total effect of either exposure to deprivation or threat on psychological distress, but we did find significant indirect effects of exposure to deprivation on psychological distress via cognitive ability (- 0.11, 95% CI - 0.20 to - 0.05) and emotion regulation (0.03, 0.02 to 0.12), and exposure to threat on psychological distress via cognitive ability (- 0.04, - 0.07 to - 0.01) and emotion regulation (0.09, 0.03 to 0.15). The lack of associations between deprivation or threat and psychological distress may be due to reporting bias or developmental period of psychopathology. Results of mediation analysis partially support the DMAP but indicate limited benefits to reduce adolescent psychological distress by targeting cognitive ability or emotion regulation to those exposed to childhood adversities.

Correlates of Hypertensive-Level BP in African American Adolescents

OBJECTIVE

Adult cardiovascular disease has its roots in childhood and adolescence. Risks for pediatric hypertension include obesity, male sex, and minority race. We identified risk factors associated with hypertension specifically among African American adolescents ages 13-18.

METHODS

We analyzed data from the US National Health and Nutrition Examination Surveys from 2011 to 2018, defining BP consistent with hypertension as average systolic or diastolic BP ≥ 130/80 mmHg or taking medication for a clinical diagnosis of hypertension. Univariate analyses compared characteristics of adolescents with and without hypertensive-level BP. Logistic regression was completed to more precisely identify risk factors.

RESULTS

Among 838 African American adolescents, 48 met criteria for hypertensive-level BP, for a population prevalence of 5.8%. Due to low rates of hypertensive-level BP in girls (2.7%), our analysis focused on the subset of boys, who had an 8.9% prevalence rate, increasing to 26.1% for boys with obesity and 35.3% for boys with severe obesity. Boys with hypertensive-level BP had significantly lower family incomes, higher rates of being in single-parent families, more frequent consumption of fast food, were more likely to be taking prescription medications for psychiatric diagnoses, and had higher A1c and cholesterol values.

CONCLUSIONS

Our study confirms the much higher risk for hypertensive-level BP in African American boys and emphasizes the important role of social determinants of health in this common illness.

The Influence of Adolescent Sport Participation on Body Mass Index Tracking and the Association between Body Mass Index and Self-Esteem over a Three-Year Period

This study aimed to (1) investigate gender-specific characteristics associated with low sport participation among UK adolescents, and (2) assess gender-specific BMI tracking, and gender-specific associations between BMI and self-esteem based on different levels of adolescent sport participation. Participants were 9046 (4523 female) UK adolescents. At 11- and 14 years self-esteem was self-reported and BMI was calculated from objectively measured height and weight. At 11- years sport participation was parent-reported. Gender-specific sport participation quartile cut-off values categorised boys and girls separately into four graded groups. Gender-specific χ² and independent samples t tests assessed differences in measured variables between the lowest (Q1) and highest (Q4) sport participation quartiles. Adjusted linear regression analyses examined BMI tracking and associations between BMI and self-esteem scores. Gender-specific analyses were conducted separately for sport participation quartiles. Compared to Q4 boys and girls, Q1 boys and girls were more likely to be non-White, low family income, have overweight/obesity at 11 years and report lower self-esteem at 11 years and 14 years. BMI at 11 years was positively associated with BMI at 14 years for boys and girls across sport participation quartiles. BMI at 11 years was inversely associated with self-esteem scores at 11 years for Q1 and Q2 boys, and Q1 and Q4 girls. BMI at 11 years was inversely associated with self-esteem scores at 14 years for Q1, Q3 and Q4 boys, and Q1, Q2, Q3 and Q4 girls. Gender and sport participation influence BMI tracking and the BMI and self-esteem association among adolescents.

Adolescent time use and mental health: a cross-sectional, compositional analysis in the Millennium Cohort Study

OBJECTIVE

To examine the association of 24-hour time-use compositions with mental health in a large, geographically diverse sample of UK adolescents.

DESIGN

Cross-sectional, secondary data analysis.

SETTING

Millennium Cohort Study (sixth survey), a UK-based prospective birth cohort.

PARTICIPANTS

Data were available from 4642 adolescents aged 14 years. Analytical samples for weekday and weekend analyses were n=3485 and n=3468, respectively (45% boys, 85% white ethnicity).

PRIMARY AND SECONDARY OUTCOME MEASURES

Primary outcome measures were the Strengths and Difficulties Questionnaire (SDQ, socioemotional behaviour), Mood and Feelings Questionnaire (MFQ, depressive symptoms) and Rosenberg Self-Esteem Scale (RSE, self-esteem). Behavioural exposure data were derived from 24-hour time-use diaries.

RESULTS

On weekdays, participants spent approximately 54% of their time in sleep, 3% in physical activity, 9% in school-related activities, 6% in hobbies, 11% using electronic media and 16% in domestic activities. Predicted differences in SDQ, MFQ and RSE were statistically significant for all models (weekday and weekend) that simulated the addition or removal of 15 min physical activity, with an increase in activity being associated with improved mental health and vice versa. Predicted differences in RSE were also significant for simulated changes in electronic media use; an increase in electronic media use was associated with reduced self-esteem.

CONCLUSION

Small but consistent associations were observed between physical activity, electronic media use and selected markers of mental health. Findings support the delivery of physical activity interventions to promote mental health during adolescence, without the need to specifically target or protect time spent in other activities.

To what extent do unhealthy behaviour indicators explain the neighbourhood deprivation gradient in overweight among 11-year-old English children?

Aims

This study examined associations between neighbourhood deprivation, school commuting behaviour, a range of unhealthy behaviour indicators and overweight/obesity among 11-year-old English children.

Methods

Data are from wave five of the UK Millennium Cohort Study, collected in 2012. Subjects consisted of 7262 (3637 boys) 11-year-old English children. Children were classified as normal weight or overweight/obese. School commute mode (active/passive) and health behaviour indicators were parent-reported. Health behaviour indicator scores below the mean of the lower half of the distribution were classified as unhealthy on this indicator. Neighbourhood deprivation was defined using the 2004 English Indices of Multiple Deprivation. Odds ratios (ORs) for being overweight/obese according to neighbourhood deprivation were estimated. A range of unhealthy behaviour indicators were explored to assess the extent to which they attenuated associations between neighbourhood deprivation and overweight/obesity.

Results

Children living in the most deprived neighbourhoods in England were more likely to be overweight/obese, commute to and from school actively and participate in all unhealthy behaviour indicators compared to children living in the least deprived neighbourhoods. Adjusting for confounders and significant unhealthy behaviour indicators reduced the OR for overweight/obese from 1.81 (95% CI 1.54 to 2.13) to 1.56 (95% CI 1.30 to 1.88) in the highest neighbourhood deprivation group compared to the lowest.

Conclusion

Active school commuting alone is unlikely to be enough to prevent and reduce the prevalence of overweight/obesity in the most deprived English neighbourhoods. Childhood overweight/obesity-related interventions should focus on promoting participation in a range of health behaviours.

Prevalence of Childhood Overweight and Obesity in Liverpool between 2006 and 2012: Evidence of Widening Socioeconomic Inequalities

The primary aim of this study was to describe the prevalence of childhood overweight and obesity in Liverpool between 2006 and 2012. A secondary aim was to examine the extent to which socioeconomic inequalities relating to childhood overweight and obesity in Liverpool changed during this six-year period. A sample of 50,125 children was created using data from the National Child Measurement Program (NCMP) in Liverpool. The prevalence of overweight and obesity was calculated for Reception and Year 6 aged children in Liverpool for each time period by gender and compared against published averages for England. Logistic regression analyses examined the likelihood of children in Liverpool being classified as overweight and obese based on deprivation level for each time period. Analyses were conducted separately for Reception and Year 6 aged children and were adjusted for gender. The prevalence of overweight and obesity among Reception and Year 6 aged children in Liverpool increased between 2006 and 2012. During the same period, socioeconomic disparities in overweight and obesity prevalence between children living in the most deprived communities in Liverpool and those living in less deprived communities in Liverpool, widened. This study evidences rising rates of overweight and obesity among Liverpool children and widening socioeconomic health inequalities within Liverpool, England’s most deprived city between 2006 and 2012.