. 2021 Oct 31;156(3):459–465. doi: 10.1002/ijgo.13989

TABLE 2.

Risk for stillbirth and preterm birth in Austria during the lockdown period (March to April 2020) in comparison to the same time period of the preceding years

	Events (per 1000 births)				Odds ratio (95% confidence interval)
	Pre‐COVID−19		COVID−19		Odds ratio (95% confidence interval)
	Births in March to April 2015–2019		Births in March to April 2020		Unadjusted	P value	Adjusted	P value
	(n = 66 334)		(n = 12 517)
	n	‰	n	‰
Stillbirth	158	2.38	44	3.52	1.48 (1.06–2.07)	0.022	1.45 (1.00–2.10) ^a	0.05
Stillbirth	158	2.38	44	3.52	1.48 (1.06–2.07)	0.022	1.57 (1.08–2.27) ^b	0.018
Preterm birth (<37⁺⁰ weeks)	3985	60.07	716	57.2	1.00 (0.88–1.14)	0.213
Extremely preterm (<28⁺⁰ weeks)	213	53.45	40	57.2
Very preterm (28⁺⁰ to 31⁺⁶ weeks)	397	99.62	68	94.97
Moderately preterm (32⁺⁰ to 36⁺⁶ weeks)	3375	846.93	608	849.16

^{^a}

Adjusted for maternal age, parity, body mass index.

^{^b}

Adjusted for maternal age, parity, body mass index, and smoking status.