The 2000 CDC Growth Chart Reference Population – Test Your Knowledge

  Measurement errors in NHANES III make the data invalid.

  The smaller sample size of older children in NHANES III made the curves statistically unreliable.

  There was a decrease in the prevalence of obesity among children aged 6 years and older which would change the growth reference.

  There was an increase in the prevalence of obesity among children aged 6 years and older in NHANES III data compared to previous data, which would have moved the growth reference higher and resulted in classification of fewer children and teens as having obesity.