Figure 1.
Associations of relative miRNA expression with in utero exposure to air pollution. Associations are presented as percentage changes in relative miRNA (miR-16, miR-20a, miR-21, miR-34a, miR-146a, and miR-222) expression across the three trimesters of pregnancy, for each 5 µg/m3 increase in PM2.5 exposure (black square) and in NO2 exposure (grey triangle). Estimates were adjusted for newborn's gender, gestational age (weeks) and ethnicity (European, non-European), maternal age (years), pre-gestational BMI (kg/m2), smoking status (never-, past- or current-smoker), educational status (low, middle or high), parity (1, 2, or ≥3), seasonality at conception and apparent temperature (during the third trimester). Asterisk (*) indicates statistically significant (P < 0.05).