Fig. 1
From: Prenatal exposure to heavy metal mixtures and anthropometric birth outcomes: a cross-sectional study
Pairwise Spearman's correlations matrix for metals concentrations (n = 975) from urine samples of study participants. Using a color spectrum, red indicates a positive correlation while blue indicants negative correlations. Only significant correlation (p < .05) coefficients appear in the figure. Metal concentrations were corrected for creatinine levels (μg/g), log-transformed, and were IQR standardized