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Pediatr Obes. 2014 Jun;9(3):167-75. doi: 10.1111/j.2047-6310.2013.00154.x. Epub 2013 May 15.

Prevalence of obesity and extreme obesity in children aged 3-5 years.

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  • 1Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA; Department of Medicine, Kaiser Permanente Oakland Medical Center, Oakland, CA, USA.

Abstract

BACKGROUND:

Early childhood adiposity may have significant later health effects. This study examines the prevalence and recognition of obesity and severe obesity among preschool-aged children.

METHODS:

The electronic medical record was used to examine body mass index (BMI), height, sex and race/ethnicity in 42,559 children aged 3-5 years between 2007 and 2010. Normal or underweight (BMI < 85th percentile); overweight (BMI 85th-94th percentile); obesity (BMI ≥ 95th percentile); and severe obesity (BMI ≥ 1.2 × 95th percentile) were classified using the 2000 Centers for Disease Control and Prevention growth charts. Provider recognition of elevated BMI was examined for obese children aged 5 years.

RESULTS:

Among 42,559 children, 12.4% of boys and 10.0% of girls had BMI ≥ 95th percentile. The prevalence was highest among Hispanics (18.2% boys, 15.2% girls), followed by blacks (12.4% boys, 12.7% girls). A positive trend existed between increasing BMI category and median height percentile, with obesity rates highest in the highest height quintile. The prevalence of severe obesity was 1.6% overall and somewhat higher for boys compared with girls (1.9 vs. 1.4%, P < 0.01). By race/ethnicity, the highest prevalence of severe obesity was seen in Hispanic boys (3.3%). Among those aged 5 years, 77.9% of obese children had provider diagnosis of obesity or elevated BMI, increasing to 89.0% for the subset with severe obesity.

CONCLUSIONS:

Obesity and severe obesity are evident as early as age 3-5 years, with race/ethnic trends similar to older children. This study underscores the need for continued recognition and contextualization of early childhood obesity in order to develop effective strategies for early weight management.

© 2013 The Authors. Pediatric Obesity © 2013 International Association for the Study of Obesity.

KEYWORDS:

Children; obesity; preschool; severe obesity

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