We investigated the effect of lockdown measures implemented in Lombardy on selected obstetric and perinatal outcomes. Births that occurred during the two lockdowns imposed (i.e., the first from 16 March to 2 June 2020 and the second from 3 November 2020 to 5 April 2021) and the comparison periods (i.e., the first from 16 March to 2 June 2018 and the second from 3 November 2018 to 5 April 2019) were identified using regional healthcare databases. The distribution of births according to the selected outcomes was computed and the Chi-square test was used for testing differences in the periods compared. During the two lockdowns, we observed a lower proportion of low birth weight, from 6.8% in the comparison period to 6.1% in the first lockdown (p = 0.019), and from 6.5% to 6.1% in the second one (p = 0.109). The proportion of preterm births decreased from 6.8% to 6.3% in the first lockdown (p = 0.097), and from 6.2% to 6.0% in the second one (p = 0.172). No differences in stillbirth rate emerged for both lockdowns. Induction of labor was more frequent during both lockdowns, from 28.6% to 32.7% in the first (p < 0.0001), and from 29.9% to 33.2% in the second one (p < 0.0001). Cesarean section was less frequent during the second lockdown.
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