NHANES: Obesity Prevalence and BMI Trends Among US Children and Adolescents, 2009-2010

Ogden CL, Carroll MD, Kit BK, Flegal KM. Prevalence of obesity and trends in body mass index among US children and adolescents, 1999-2010.
JAMA. 2012;307(5):483-490. 

The National Health and Nutrition Examination Survey (NHANES) is a nationally representative sample of US civilian noninstituationalized population. The survey has run continuously since 1999, with data released in 2-year cycles.  

This NHANES analysis estimated obesity prevalence among children and adolescents (birth through 19 years of age) from 2009-2010 and examined trends since 1999 using data from 2-year cycles.  

  • NHANES 2009-2010: N=4,111 children and adolescents  

Height and weight were measured for all subjects. Definitions of obesity and overweight:  

  • Infants and toddlers (birth to 2 years of age): no universal definition for obesity; weight-for-recumbent length ≥95th percentile on CDC’s 2000 growth charts used  
  • Children and adolescents (aged 2-19 years)
    • Overweight = ≥85th percentile (sex-specific) on CDC’s 2000 growth chart but <95th percentile  
    • Obese = BMI ≥95th percentile (sex-specific)  
     

Subjects were grouped by age into the following categories: 2-5 years, 6-11 years, 6-19 years, and 12-19 years. Race and ethnicity were self-reported.  

Based on data from NHANES 2009-2010, the prevalence of obesity among US children and adolescents aged 2-19 years was as follows:  

US boys aged 2-19 years by ethnic group  

  • All race/ethnicity groups (also includes race/ethnicity groups not shown separately): 18.6% (95% CI, 16.4-21.0)  
  • Non-Hispanic White: 16.1% (95% CI, 12.6-20.3)  
  • Non-Hispanic Black: 24.3% (95% CI, 18.7-30.8)  
  • Hispanic (includes Mexican American participants): 23.4% (95% CI, 20.5-26.6)  
  • Mexican American: 24.0% (95% CI, 20.6-27.8)  

US girls aged 2-19 years by ethnic group  

  • All race/ethnicity groups (also includes race/ethnicity groups not shown separately): 15.0% (95% CI, 13.3-16.8)  
  • Non-Hispanic White: 11.7% (95% CI, 9.5-14.2)  
  • Non-Hispanic Black: 24.3% (95% CI, 19.2-30.3)  
  • Hispanic (includes Mexican American participants): 18.9% (95% CI, 15.4-22.9)  
  • Mexican American: 18.2% (95% CI, 13.4-24.2)  

Boys had a significantly higher prevalence of obesity compared with girls (P=0.01). Overall prevalence in both groups was 16.9% (95% CI, 15.4-18.4).  

Obesity and BMI trends seen among US children and adolescents per NHANES data from 1999-2010 showed the following:  

  • Obesity
    • No difference in obesity prevalence among boys and girls between 2007-2008 and 2009-2010  
    • Significant increase in obesity prevalence between 1999-2000 and 2009-2010 among boys aged 2-19 years (OR, 1.05; 95% CI, 1.01-1.10) but not among girls (OR, 1.02; 95% CI, 0.98-1.07) per 2-year survey cycle  
     
  • BMI
    • Significant increase among boys aged 12-19 (P=0.04) 
    • No other increases seen among girls or among other age groups  
     

 

August 2012  

 This overview was created by KnowledgePoint360 Group, LLC, and was not associated with funding via an educational grant or a promotional/commercial interest. 

Related content: 

Overview: NHANES: Obesity Prevalence and BMI Trends Among US Adults  

NHANES: Obesity Prevalence and BMI Trends Among US Children and Adolescents  

NHANES: Obesity* Prevalence Among US Children and Adolescents Aged 2-19 Years, 2009-2010  

NHANES: Obesity* Prevalence Among US Boys Aged 2-19 Years by Race/Ethnicity, 2009-2010  

NHANES: Obesity* Prevalence Among US Girls Aged 2-19 Years by Race/Ethnicity, 2009-2010  

NHANES: Obesity and BMI Trends Among US Children and Adolescents, 1999-2010  

Last Modified: 11/18/2013