Table 2.

The hazard ratio for comparing matched between the reinfection and primary infection cohorts for the outcomes.

Outcomes	Patients with outcome		Hazard ratio (95%CI)	p value
	Reinfection group (n = 31,899)	Primary infection (n = 31,899)
Primary outcome	2,281	2,403	0.96 (0.91 to 1.02)	0.17
Secondary outcomes
Emergency department visits	1,353	1,334	1.03 (0.95 to 1.11)	0.49
All-cause hospitalization	1,071	1,157	0.94 (0.86 to 1.02)	0.14
Intensive care unit admission	69	76	0.92 (0.67 to 1.28)	0.62
Mechanical ventilation use	20	15	1.35 (0.69 to 2.64)	0.38
All-cause mortality	131	141	0.94 (0.74 to 1.20)	0.62