Table 2.

Risk‐adjusted in‐hospital mortality overall and for subgroups of patients' hospitalized with COVID‐19 and tested positive or negative (reference group) for COVID‐19 antibody

	Odds ratio	Confidential Interval	p value
Overall	0.68	0.50–0.91	0.01
Patients without endotracheal intubation	0.78	0.53–1.16	0.23
Patients with endotracheal intubation	0.36	0.17–0.77	0.009
Patients whose oxygen saturation ≥ 92%	0.96	0.35–2.66	0.94
Patients whose oxygen saturation < 92%	0.71	0.51–0.98	0.038

Abbreviation: COVID‐19, coronavirus disease 2019.