Table 5.

Unadjusted and Adjusted Odds Ratios Disease Progression in the FLU003 Inpatient Cohort by Influenza Virus Type/Influenza A Virus Subtype

	A(H3N2) vs A(H1N1)pdm09			B vs A(H1N1)pdm09			A(H3N2) vs B
Enrolled From General Ward	OR	95% CI	P Value	OR	95% CI	P Value	OR	95% CI	P Value
Unadjusteda	0.74	0.48–1.15	.18	0.82	0.47–1.45	.50	0.90	0.50–1.62	.73
Adjustedb	0.79	0.44–1.43	.43	0.95	0.49–1.84	.89	0.83	0.43–1.59	.57
Enrolled from ICU
Unadjusteda	0.81	0.43–1.52	.51	0.87	0.34–2.26	.78	0.93	0.33–2.57	.88
Adjustedb	0.11	0.38–3.25	.85	1.06	0.30–3.83	.92	1.05	0.25–4.45	.95
Total
Unadjusteda	0.76	0.53–1.09	.14	0.84	0.52–1.36	.48	0.91	0.55–1.51	.71
Adjustedb	0.87	0.52–1.44	.59	1.00	0.57–1.75	1.00	0.87	0.48–1.56	.64

Abbreviations: CI, confidence interval; ICU, intensive care unit; OR, odds ratio.

^aOverall is stratified by hospital unit at enrollment.

^bStratified by hospital unit at enrollment and adjusted for region, age, gender, ethnicity, body mass index, smoking, duration of symptoms, ≥1 comorbidities, ≥1 severe complications, influenza vaccine in past year, and use of antivirals on or before enrollment date.