Fig. 2
Ambient air pollution exposure at maternal home address(es) during pregnancy (A) and correlations between different cord blood steroid levels (B). Prenatal exposure to ambient air pollutants. Raindrop plots and box-plots for and black carbon (BC, n = 378), NO2 and PM2.5 (both n = 397), all expressed as µg/m3. Cord blood steroids. Density plots, scatter plots, and correlation coefficients between the levels (log10 transformed) of different steroids (n = 397): 17α-hydroxypregnenolone (indicated as 17-OH-pregnenolone, ng/dL), 17α-hydroxyprogesterone (indicated as 17-OH-progesterone, ng/dL), DHEA (ng/dL), pregnenolone (ng/dL), and androstenedione (ng/dL) and testosterone (ng/dL). Corr = correlation coefficient, * indicates p < 0.05, *** indicates p < 0.0001