Table 3.

In-Hospital Outcomes of Patients Hospitalized With Influenza Infection (Cases) Who Were Vaccinated and Unvaccinated

Characteristic	Overall (N = 291)	Vaccinated (n = 136)	Unvaccinated (n = 155)	P
Intensive care unit admission	38 (13)	12 (9)	26 (17)	.045
Low-flow supplemental oxygen	176 (60)	79 (58)	97 (63)	.43
High-flow nasal cannula	19 (7)	7 (5)	12 (8)	.37
Noninvasive positive-pressure ventilation	28 (10)	14 (10)	14 (9)	.72
Invasive mechanical ventilation	12 (4)	4 (3)	8 (5)	.34
Vasopressor receipt	15 (5)	5 (4)	10 (6)	.29
In-hospital death within 28 days	6 (2)	2 (1)	4 (3)	.51

Data are presented as n (%).