Table 3.

Multivariate Analysis of the Impact of Convalescent Plasma Treatment on All Cause In-hospital Mortality as Compared to the Control Group

		Adjusted HR (95% CI)
All Cause In-hospital Mortality	Unadjusted HR (95% CI)	Model 1a	Model 2b
Overall (n = 64)	.73 (.32–1.69)	.91 (.39–2.15)	.93 (.39–2.20)
AI ≥ 1.4c (n = 32)	1.08 (.41–2.80)	1.09 (.41–2.86)	1.17 (.43–3.19)
AI ≥ 5d (n = 18)	.35 (.05–2.62)	.38 (.05–2.98)	.39 (.05–3.08)

Abbreviations: AI, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) immunoglobulin G (IgG) antibody index; CI, confidence interval; HR, hazard ratio.

^aAdjusted for age, sex, race, and baseline oxygen requirements.

^bAdjusted for age, sex, race, baseline oxygen requirements, remdesivir use, and corticosteroid use.

^cAt least 1 unit with AI ≥ 1.4 but not 2 units both with AI ≥ 5.

^dTwo units both with AI ≥ 5.