Births, N (%) Births, N (%) OR (95% CI) OR (95% CI)
Outcome Pandemic period Historical period Unadjusted Adjusteda
PTB 25,550 (7.06) 85,947 (7.69) 0.90 (0.87;0.93) 0.91 (0.88;0.95)
Late PTB 22,463 (6.2) 75,047 (6.72) 0.91 (0.87;0.94) 0.92 (0.89;0.95)
Very PTB 3,087 (0.85) 10,900 (0.98) 0.87 (0.84;0.91) 0.87 (0.83;0.91)
Extreme PTB 999 (0.28) 3,504 (0.31) 0.88 (0.82;0.94) 0.88 (0.82;0.95)
Stillbirths 960 (0.26) 3,004 (0.27) 1.01 (0.90;1.13) 0.96 (0.89;1.04)