Table 2.

Live births and stillbirths as a function of gestational age at birth in the lockdown (March 12–April 14) and extended period of COVID-19 restrictions (February 27–September 30)

	GA	2020	2015–2019	2020 vs 2015–2019
Lockdown (March 12–April 14)
	Weeks + days	N (%)	Mean (SD)	OR (95% CI)
Live births
Extremely preterm	≤ 27 + 6	4 (0.08)	15.0 (3.2)	0.27 (0.07, 0.86)
Very preterm	28 + 0–31 + 6	18 (0.36)	23.4 (1.6)	0.80 (0.41, 1.56)
Moderate preterm	32 + 0–36 + 6	202 (4.03)	217.4 (7.3)	0.96 (0.78, 1.17)
Term	37 + 0–41 + 6	4731 (94.37)	4835.0 (206.1)	1.13 (0.95, 1.34)
Late term	≥ 42 + 0	33 (0.66)	40.6 (3.8)	0.83 (0.51, 1.34)
Missing GA		11 (0.22)	84.0 (39.5)
Stillbirths
Extremely preterm	≤ 27 + 6	4 (0.08)	6.2 (3.0)	0.55 (0.08, 3.28)
Very preterm	28 + 0–31 + 6	4 (0.08)	2.6 (1.10)	1.57 (0.21, 13.43)
Moderate preterm	32 + 0–36 + 6	2 (0.04)	2.4 (1.1)	1.00 (0.06, 15.94)
Term	37 + 0–41 + 6	4 (0.08)	3.2 (1.5)	1.45 (0.19, 12.44)
Late term	≥ 42 + 0	0 (0.00)	0.0 (0.0)	0.00 (0.00, inf)
Missing GA		0 (0.00)	0.0 (0.0)
Period of COVID-19 restrictions (February 27–September 30)
	Weeks + days	N (%)	Mean (SD)	OR (95% CI)
Live births
Extremely preterm	≤ 27 + 6	58 (0.16)	74.6 (4.9)	0.79 (0.55, 1.12)
Very preterm	28 + 0–31 + 6	150 (0.43)	165.8 (6.4)	0.92 (0.73, 1.15)
Moderate preterm	32 + 0–36 + 6	1410 (3.98)	1468.6 (45.8)	0.98 (0.90, 1.05)
Term	37 + 0–41 + 6	33,338 (94.19)	33,242 (903.4)	1.38 (1.29, 1.46)
Late term	≥ 42 + 0	241 (0.68)	289.4 (23.4)	0.85 (0.71, 1.01)
Missing GA		129 (0.36)	550.8 (249.0)
Stillbirths
Extremely preterm	≤ 27 + 6	22 (0.06)	33.4 (6.4)	0.97 (0.47, 1.97)
Very preterm	28 + 0–31 + 6	9 (0.03)	11.6 (3.6)	1.13 (0.39, 3.13)
Moderate preterm	32 + 0–36 + 6	16 (0.05)	20.0 (6.3)	1.23 (0.54, 2.76)
Term	37 + 0–41 + 6	21 (0.06)	32.4 (6.1)	0.95 (0.46, 1.94)
Late term	≥ 42 + 0	0 (0.00)	0.2 (na)	0.00 (0.00, inf)
Missing GA		0 (0.00)	2.6 (1.7)