Table 3.

SARS-CoV-2 IgG 6 and 12 weeks after the first vaccination and their associated risk for negative humoral responses.

Variable	Absence of SARS-CoV-2 IgG 24 Weeks after 1st Vac	Absence of Neutralizing Antibodies 24 Weeks after 1st Vac
	Adjusted Odds Ratio (95% CI); Significance	Adjusted Odds Ratio (95% CI); Significance
SARS-CoV-2 IgG, 6 weeks after 1st vac per 1 BAU/mL	1.002 (0.996–1.008); p = 0.540	0.998 (0.997–1.000); p = 0.120
SARS-CoV-2 IgG, 12 weeks after 1st vac per 1 BAU/mL	0.955 (0.913–0.998); p = 0.039	0.996 (0.993–1.000); p = 0.037

SARS-CoV-2 IgG = Severe Acute Respiratory Syndrome-Corona Virus type-2 Immunoglobulin G; vac = vaccination.