TABLE 2.

Comparison of Demographic Characteristics of the NHANES III Data and the CHDS Data for Children 0 to 60 Months of Age

NHANES III (1988–1994) Data* (N = 6662)CHDS (1959–1978) Data (N = 10 844)
Gender (%)
 Boys51.250.9
 Girls48.849.1
Race/ethnicity (%)
 Non-Hispanic white62.572.0
 Non-Hispanic black16.419.3
 Hispanic16.7
 Others4.58.7
Mean birth weight (g)3356 (590)3359 (496)
Birth weight <2500 g (%)10.04.1
Mean z score
 Height-for-age0.17 (0.96)0.11 (0.94)
 Weight-for-age0.14 (1.04)0.08 (0.97)
 Weight-for-height0.17 (1.02)0.04 (1.15)
 BMI-for-age§0.14 (1.04)0.32 (1.00)
  • * NHANES III data cover children 2 to 59 months of age, and the original sample weight was applied to the analysis.

  • Mean z scores and SD were based on one random visit per child among the total of 44 292 measurements.

  • SD in parentheses.

  • § Only for children 24 to 60 months of age.