Defining overweight in children using growth charts

Cynthia L Ogden1

  • 1Centers for Disease Control and Prevention, Hyattsville, Maryland, USA.

Insights

Pediatric overweight is defined differently than adult obesity, using statistical BMI-for-age percentiles based on growth charts. The 2000 CDC growth charts define overweight as the 95th percentile and at-risk for overweight between the 85th and 95th percentiles for children.

Area of Science:

  • Pediatric Endocrinology
  • Public Health
  • Growth Monitoring

Background:

  • Childhood overweight and adult obesity rates have both risen.
  • Definitions for pediatric overweight and adult obesity differ significantly.
  • Adult obesity uses fixed cutoffs, while pediatric overweight relies on reference populations.

Purpose of the Study:

  • To clarify the definitions and screening methods for pediatric overweight in the U.S.
  • To highlight the specific criteria used for identifying overweight and at-risk children.
  • To explain the role of the Centers for Disease Control and Prevention (CDC) growth charts.

Main Methods:

  • Utilizing the 2000 CDC BMI-for-age growth charts for U.S. children and teens (ages 2-19).
  • Applying statistical definitions based on reference populations for BMI.
  • Establishing percentile cutoffs for overweight and at-risk for overweight categories.

Main Results:

  • Overweight in children and teens is defined as a BMI-for-age greater than or equal to the 95th percentile.
  • At-risk for overweight is defined as a BMI-for-age between the 85th and 95th percentiles.
  • The 2000 CDC growth charts serve as a growth reference, not a prescriptive standard.

Conclusions:

  • The 2000 CDC BMI-for-age growth charts are the recommended tool for screening pediatric overweight in the U.S.
  • Clear percentile-based definitions are crucial for consistent identification of overweight and at-risk children.
  • Understanding these definitions is vital for public health initiatives addressing childhood obesity.

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