Table 3.

Factors associated with Antibody Positive to SARS-CoV-2 Among Individuals Attending the JHH ED between 11 January to 10 March 2021.

Characteristics	Category	OR of Natural Infection (95% CI)	Adj. OR of Natural Infection (95% CI)	OR of Vaccination (95% CI)	Adj. OR of Vaccination (95% CI)
Age	18–29 years	1	1	1	1
	30–44 years	0.93 (0.70, 1.24)	0.86 (0.64, 1.16)	1.04 (0.72, 1.52)	0.99 (0.67, 1.46)
	45–59 years	0.82 (0.61, 1.11)	0.84 (0.62, 1.14)	0.51 (0.32, 0.80)	0.51 (0.32, 0.82)
	60–74 years	0.71 (0.52, 0.98)	0.76 (0.55, 1.06)	1.11 (0.75, 1.64)	1.13 (0.75, 1.69)
	≥ 75 years	0.81 (0.52, 1.24)	0.94 (0.60, 1.46)	1.00 (0.58, 1.74)	0.88 (0.50, 1.55)
	Missing	N.E.	N.E.	N.E.	N.E.
Ethnicity/Race/Sex	NH Black Female	1	1	1	1
	NH White Female	0.46 (0.31, 0.67)	0.46 (0.32, 0.67)	2.40 (1.64, 3.53)	2.42 (1.64, 3.56)
	Hispanic Female	3.11 (1.98, 4.86)	3.08 (1.96, 4.84)	1.38 (0.64, 2.99)	1.36 (0.62, 2.97)
	Other Female	0.91 (0.53, 1.57)	0.92 (0.53, 1.60)	2.42 (1.32, 4.45)	2.47 (1.34, 4.57)
	NH White Male	0.75 (0.53, 1.06)	0.77 (0.55, 1.09)	1.61 (1.04, 2.49)	1.59 (1.02, 2.47)
	NH Black Male	0.77 (0.59, 1.02)	0.79 (0.60, 1.04)	0.70 (0.45, 1.09)	0.72 (0.46, 1.13)
	Hispanic Male	2.92 (1.86, 4.58)	3.01 (1.90, 4.77)	1.94 (0.98, 3.85)	2.04 (1.02, 4.08)
	Other Male	0.99 (0.54, 1.80)	0.99 (0.54, 1.81)	1.82 (0.87, 3.84)	1.87 (0.89, 3.94)

Abbreviations: Adj. Adjusted; OR Odds Ratio; CI confidence interval; n, number; NH non-Hispanic.