Fig. 1

a. Differences in degrees of preterm rates compared to term births during pandemic periods from pre-pandemic periods [Estimated for year interaction (2020 vs 2019), and controlled for NUTS region, maternal age, mode of delivery, parity, onset of labor, presentation birth weight and infant sex in singleton pregnancies (Model 2); *p < 0.05]. b Differences in degrees of LBW rates compared to normal weight births during pandemic periods from pre-pandemic periods [Estimated for year interaction (2020 vs 2019), and controlled for NUTS region, maternal age, birth type, parity, onset of labor, presentation, and infant sex in singleton pregnancies; *p < 0.05]