Figure.
Urinary metabolites of polycyclic aromatic hydrocarbons (PAHs) and pubertal development. The figure depicts hazard ratios (HRs) and 95% confidence intervals (CIs) for the joint associations of urinary PAH metabolite concentrations (high vs. low) and BMI-for-age-percentile (<85, ≥85) with pubertal development outcomes from Cox proportional hazards regression models with robust variance estimator, adjusted for age at baseline urine collection (continuous), race–ethnicity (non-Hispanic White, African American, Asian American, Hispanic, mixed race–ethnicity), mother’s education (some college or less, college degree, graduate degree, unknown). The prospective analyses were based on 176 girls with breast Tanner Stage 1 at baseline PAH metabolite measurement, 179 girls with pubic hair Tanner Stage 1 at baseline, and 267 pre-menarche girls at baseline.