. 2022 Sep 26;37(41):e297. doi: 10.3346/jkms.2022.37.e297

Table 3. Obstetric outcomes according to COVID-19 severity in pregnant women with COVID-19.

Characteristics	Total obstetric outcome (N = 65)	Maternal disease severity		P value
Characteristics	Total obstetric outcome (N = 65)	Mild (n = 37)	Severe (n = 28)	P value
Gestational age at delivery, wk	38 (36–39)	38 (38–39)	36 (35–38)	< 0.001^a
Preterm birth (≤ 37 wk)	25 (38.46)	7 (18.92)	18 (64.29)	< 0.001^b
Preeclampsia	0 (0.00)	0 (0.00)	0 (0.00)	N/A
Miscarriage	3 (4.62)	3 (8.11)	0 (0.00)	0.253^c
Stillbirth	0 (0.00)	0 (0.00)	0 (0.00)	N/A
Premature rupture of membranes	5 (7.69)	1 (2.70)	4 (14.29)	0.156^c
Cesarean delivery	51 (78.46)	23 (62.16)	28 (100)	0.001^c

Values are presented as median (interquartile range) or number (%).

COVID-19 = coronavirus disease 2019, N/A = not available.

^aMann-Whitney U test was used for testing; ^bChi-squared test was used for testing; ^cFisher’s exact was used for testing.