The association of COVID- 19 parental immunization and transmission of disease to offspring: a retrospective study

Table 4 Associations between Demographic Factors and Child COVID- 19 Infection incidence

	Crude		Adjusted
Variable	Crude OR (95% confidence interval)	P-value	Adjusted OR (95% confidence interval)	P-value
Maternal COVID- 19 infection	96(66—139)	< 0.001*	37.74(24.86- 57.27)	< 0.001*
Paternal COVID- 19 infection	29(23—38)	< 0.001*	6.50(4.74—8.92)	< 0.001*
Father’s age				0.770
≤ 30 years	Ref
> 30 years			0.996(0.972–1.021)
Mother’s age		0.03*		0.04*
≤ 30 years	Ref
> 30 years	0.8(0.6 to 0.9)		0.6(0.3- 0.7)
Type of Breastfeeding		0.001*		0.186
Exclusive Breastfeeding	Ref
Non-exclusive Breastfeeding	0.8(0.7–0.9)		0.89(0.74- 1.06)
Quality of Breastfeeding		0.189		0.327
Adequate or excellent	Ref
Poor or fair	1.2(0.9 to 1.4)
Family income		< 0.001*		0.127
Low	Ref
Moderate or high	0.58(0.49–0.68)		0.81(0.62–1.06)
Cleaning house		0.009*		0.007*
More than once a week	0.8(0.7–0.9)		0.75(0.61–0.93)
Less than once a week	Ref		Ref

Models were adjusted with Age, Weight, Gender, Quality of Breastfeeding, Paternal education and occupation, Paternal age, Use of anti-allergic drugs, parental vaccination, Presence of chronic disease in parents, Disease and Hospitalization of children before 2 months

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