Table 4.

Maternal univariable and multivariable analysis of factors associated to symptomatic COVID-19.

		Crude OR	IC95%		p	Adjusted OR	IC95%		p
Median age > 30 vs. <30 years		2.46	0.83	7.26	0.103	0.42	0.06	3.17	0.402
Nationality	Italy	ref
	Other	1.12	0.30	4.16	0.870
BMI per unit increase		1.17	1.06	1.29	0.002	1.18	1.04	1.35	0.011
Previous respiratory pathologies yes vs. no		2.78	0.27	28.29	0.387
Previous autoimmunitary pathologies yes vs. no		2.70	0.67	10.91	0.163
Previous hematological pathologies yes vs. no		2.14	0.42	10.97	0.361	2.39	0.14	41.72	0.55
Smoke yes vs. no		0.64	0.22	1.86	0.415
Preterm birth		4.71	1.25	17.75	0.022	5.66	0.77	41.24	0.087