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Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Risk factors for childhood obesity at age 5: analysis of the millennium cohort study
Sinead Brophy1, Roxanne Cooksey, Michael B Gravenor
1Centre for Health Information, Research and Evaluation, School of Medicine, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK. s.brophy@swansea.ac.uk
Insights
Childhood obesity is influenced by lifestyle and socioeconomic factors, with ethnicity being an independent risk factor. Primary caregiver education is a key modifiable factor for intervention.
Area of Science:
- Pediatrics
- Public Health
- Genetics
Background:
- Childhood obesity is a growing public health concern with long-term health implications.
- Weight at age 5 is a significant predictor of an individual's future health trajectory.
- This study investigates key risk factors contributing to childhood obesity, with a specific emphasis on ethnic disparities.
Purpose of the Study:
- To identify and analyze risk factors associated with childhood obesity at age 5.
- To examine the independent role of ethnicity in childhood obesity, controlling for socioeconomic and behavioral factors.
- To evaluate the impact of parental education and lifestyle on obesity risk in children.
Main Methods:
- Utilized data from the Millennium Cohort study, including 17,561 children across White/European, Asian, and African ethnic backgrounds.
- Employed logistic regression and likelihood ratio tests to assess factors linked to obesity.
- Key exposures analyzed included birth weight, sedentary behavior, family health habits, ethnicity, education, and income.
Main Results:
- Sedentary lifestyle, high birth weight, and adverse family health behaviors (maternal overweight, smoking, missed breakfast) were linked to increased obesity risk across all ethnicities.
- Ethnicity emerged as an independent risk factor, with Asian and African children showing significantly higher odds of obesity compared to White/European children, even after adjusting for socioeconomic status.
- Higher educational attainment of the primary caregiver was associated with lower odds of childhood obesity, whereas increased family income showed a minimal impact.
Conclusions:
- Primary caregiver education is a crucial, modifiable factor for developing targeted interventions to combat rising childhood obesity rates.
- Family-centered interventions promoting practical lifestyle changes are recommended to address childhood obesity effectively.
- Addressing socioeconomic and ethnic disparities is essential for comprehensive childhood obesity prevention strategies.
Background:
Weight at age 5 is a predictor for future health of the individual. This study examines risk factors for childhood obesity with a focus on ethnicity.
Methods:
Data from the Millennium Cohort study were used. 17,561 singleton children of White/European (n = 15,062), Asian (n = 1,845) or African (n = 654) background were selected. Logistic regression and likelihood ratio tests were used to examine factors associated with obesity at age 5. All participants were interviewed in their own homes. The main exposures examined included; Birth weight, sedentary lifestyle, family health behaviours, ethnicity, education and income.
Results:
Children with a sedentary lifestyle, large at birth, with high risk family health behaviours (overweight mothers, smoking near the child, missing breakfast) and from a family with low income or low educational attainment, were more likely to be obese regardless of ethnicity. Feeding solid food before 3 months was associated with obesity in higher income White/European families. Even when controlling for socioeconomic status, ethnic background is an important independent risk factor for childhood obesity [Odds ratio of obesity; was 1.7 (95%CI: 1.2-2.3) for Asian and 2.7 (95%CI: 1.9-3.9) for African children, compared to White/European]. The final adjusted model suggests that increasing income does not have a great impact on lowering obesity levels, but that higher academic qualifications are associated with lower obesity levels [Odds of obesity: 0.63 (95%CI: 0.52-0.77) if primary carer leaves school after age 16 compared at age 16].
Conclusions:
Education of the primary carer is an important modifiable factor which can be targeted to address rising obesity levels in children. Interventions should be family centred supporting and showing people how they can implement lifestyle changes in their family.
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