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Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Stature, weight, and body mass among young US children born at term with appropriate birth weights
M D Overpeck1, M L Hediger, W J Ruan
1Division of Epidemiology, Statistics, and Prevention Research, National Institute of Child Health and Human Development, Bethesda, Maryland 20892-7510, USA.
Insights
Early childhood size differences influence later overweight prevalence. Mexican American children show higher body mass index (BMI) before age 7, impacting adult health outcomes.
Area of Science:
- Pediatric Health
- Growth and Development
- Obesity Research
Background:
- Childhood weight and stature tracking into adulthood is a significant public health concern.
- Early life factors are critical determinants of long-term health trajectories.
- Understanding pre-school growth patterns is essential for predicting adolescent and adult overweight prevalence.
Purpose of the Study:
- To analyze weight, stature, and body mass index (BMI) changes in children before age 7.
- To investigate how these early-life growth parameters influence later overweight prevalence across different ethnic groups.
- To determine if prenatal factors mediate or independently influence these size differences.
Main Methods:
- Utilized regression models to predict height and weight from 2 months to 6.75 years.
- Employed data from the third National Health and Nutrition Examination Survey (NHANES III).
- Adjusted for birth weight and gestational age using birth certificate data for ethnic-specific analyses.
Main Results:
- Non-Hispanic black children exhibited greater attained height compared to non-Hispanic white and Mexican American children.
- After adjustments, weights at 2 months, 2 years, and 6.75 years were similar across racial/ethnic groups.
- Mexican American children (boys 25.6%, girls 21.9%) showed higher prevalences of BMI above the 85th percentile compared to non-Hispanic whites and blacks by age 6.75.
Conclusions:
- Pre-school size differences significantly predict ethnic-specific overweight prevalence in later life.
- These early growth patterns appear to influence future obesity risk independently of prenatal factors.
- Targeted interventions may be necessary for specific ethnic groups showing higher early-life BMI percentiles.
Objective:
To describe weight, stature, and body mass index (BMI) changes occurring before the age of 7 years, which may influence the prevalence of overweight in adolescence and adulthood.
Methods:
Regression models predicting height and weight at ages 2 months to 6. 75 years were based on the third National Health and Nutrition Examination Survey. Birth certificate data were used to adjust ethnic-specific models for birth weight for gestational age.
Results:
Attained height is higher for non-Hispanic black children than for either non-Hispanic white or Mexican American children (P =.001). Weights at 2 months, 2 years, and 6.75 years are similar among racial/ethnic groups after adjustments. Mexican American children at ages 2 to 6.75 years had higher prevalences of BMI >85th percentile than either non-Hispanic white or black children (boys = 25.6%, SE = 2.7 compared with 14.1%, SE = 1.7 and 16.5%, SE = 1.7, respectively; girls = 21.9%, SE = 3.6 compared with 13.0%, SE = 1.7 and 13.7%, SE = 2.2, respectively). For non-Hispanic whites and Mexican Americans and for non-Hispanic black boys, BMI decreased slightly between ages 2 and 6.75 years; BMI for non-Hispanic black girls did not.
Conclusion:
Size differences before the age of 7 years may influence later ethnic-specific overweight prevalence, independent of prenatal influences.
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