Figure 2.

Percentages of US children aged 2–5 years within the <first, first, second, third, fourth, and fifth percentiles of height for age, 1996–2008. Percentages of children within each single percentile are weighted by using respective survey sample weights. Error bars represent 95% confidence intervals. Confidence interval estimates adjust for clustering of children within families. CDC, Centers for Disease Control and Prevention; NLSY79-Child, Children of the National Longitudinal Survey of Youth 1979 Cohort, 1996–2008; PSID-CDS, Child Development Supplement of the Panel Study of Income Dynamics, 1997.