The Centers for Disease Control and Prevention 2000 growth charts and the growth of breastfed infants

M de Onis1, A W Onyango

  • 1Department of Nutrition for Health and Development, World Health Organization, Geneva, Switzerland. deonism@who.int

Insights

Growth charts from the Centers for Disease Control and Prevention (CDC) show differences in assessing healthy breastfed infants compared to international standards. A specialized reference for breastfed infants is needed for accurate growth assessment.

Area of Science:

  • Pediatrics
  • Growth and Development
  • Nutritional Science

Background:

  • Current growth charts, such as those from the Centers for Disease Control and Prevention (CDC), are widely used for assessing infant growth.
  • However, these charts may not accurately reflect the growth patterns of exclusively breastfed infants, who have distinct growth trajectories.
  • The National Center for Health Statistics/World Health Organization (NCHS/WHO) reference is another widely used standard.

Purpose of the Study:

  • To evaluate the performance of the 2000 CDC growth charts in assessing the growth of healthy breastfed infants.
  • To compare the CDC growth charts with the NCHS/WHO reference for this specific population.

Main Methods:

  • A longitudinal sample of 226 healthy breastfed infants was analyzed.
  • Weight-for-age (WA), length-for-age (LA), and weight-for-length (WL) z-scores were calculated using both CDC and NCHS/WHO references.
  • Age-specific mean z-scores and proportions above/below cut-off points were determined.

Main Results:

  • Breastfed infants exhibited faster early growth (first 2 months) and slower later growth (3-12 months) compared to CDC WA curves.
  • Linear growth (LA) exceeded the CDC median until 4 months, then declined.
  • The CDC reference indicated infants were heavier and shorter, leading to a higher estimated prevalence of wasting compared to the NCHS/WHO reference.

Conclusions:

  • Significant differences exist in the growth trajectories of breastfed infants when assessed using the CDC reference compared to the NCHS/WHO reference.
  • A dedicated growth reference based on healthy breastfed infants is necessary for accurate assessment of infants following international feeding recommendations.
Abstract

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