Table 2.

Model-Adjusted Risks of In-Hospital Death, Hospital Discharge, and CT scan Improvement

Outcome	Analyzed Categories	Model Type	Estimate (95% CI)
			Early IFN versus No IFN	Late IFN versus No IFN
In-hospital mortality(odds ratio)	all	logistic regressiona	0.05 (0.01–0.37)p = 0.004	6.82 (1.14–40.8)p = 0.035
In-hospital mortality(hazard ratio)	all	Cox proportional hazardsb	0.10 (0.02–0.50)p = 0.005	2.30 (0.64–8.27)cp = 0.203
Hospital discharge (hazard ratio)	survivors	Cox proportional hazardsa	1.14 (0.93–1.41)cp = 0.213	0.69 (0.44–1.08)p = 0.101
CT scan improvement(hazard ratio)	survivors	Cox proportional hazardsa	1.00 (0.81–1.22)cp = 0.975	0.50 (0.32–0.80)p = 0.004

Abbreviation: IFN, interferon α-2b.

^aModel adjusted for gender, age, hypertension, diabetes, oxygen saturation at admission, symptom onset to admission >7 days, plus symptom count at admission.

^bModel adjusted for gender, age, hypertension, diabetes, oxygen saturation at admission, and symptom onset to admission >7 days.

^cProportional hazard assumption not met.